This is content marketing executed perfectly :) Reading it, I learned something new and interesting and they had an opportunity to show off one of their differentiators against the competition (low leakage flow due to tighter tolerances) and then at the end they casually mention the new product that has just opened for pre-orders.
I enjoyed reading it. Informative and showing of their processes and giving some intricate details. And yes, the end goal is to sell products which is fine by me. I take this over any generic non-saying marketing-blurb any time.
Normally I love this kind of article too because I consider it engineering, not marketing, the product name dropping at the end just reinforces the message. But either I'm missing some details that could have been spelled our more clearly, or the engineers were taking a break when the marketers were writing some parts. I'd love to stand corrected if someone more informed has details.
> advanced polymers such as Sterrox® LCP
> we have implemented a tip clearance of only 0.5mm (120mm models) or 0.7mm (140mm models)
> Achieving such small tip clearances is essentially at the absolute limit of what injection moulding can consistently reproduce.
Typical tolerances for injection moulding are 0.1mm, or 0.03 for high precision, or even better. LEGO was said to be in the 0.01-0.03mm. So on the face of it the last statement is patently false or at least too generic, injection moulding can consistently do much better than 0.5mm. With standard injection moulding precision (0.1mm) the worst case scenario for the two parts (fan and shroud) mating would still stay comfortably below 0.5mm.
So the question to the experts, is Sterrox® LCP that much harder to work with and the marketing team just didn't understand the importance of being clear about this? Is it a decimal point typo and the numbers should be 0.05 and 0.07?
I'd love more white, personally. I also don't understand the obsession with black. For me, black objects are very difficult to observe in detail, and that irks me.
Totally. I used to favor black a long time ago when most computers were still gray and the idea of having everything in black was really cool, but since realizing that details and controls are harder to discern on black, I’m all in on white and silver. It’s also less prone to showing fingerprints.
I always thought the grey Noctua Redux fans were their nicest looking offerring, despite being their lower end. I don't understand how they settled on that.
Because it's a fan and I don't want to see it, and if I must see it, I don't want it to have any color of it's own since chances are very low that whatever color it is just happens to be the perfect addition to all my other posessions next to it.
I don't understand why anyone would think this is an obsession with black.
Even if it is the case, and not simple an omission to focus the narrative, does it matter? Case fans pull what 4 watts? 5 watts? Who cares if it pulls 200 milliwatts more than a competitor when it's cooling a GPU and CPU that consume more than a hundred times what it can consume
Exactly this. Most of the time you get poorly researched articles (or nowadays, AI slop) about some topics only very remotely related to what the company actually does.
Here, the article is about something interesting that the company has expertise in (and even "insider info"), shows off that they do serious engineering, and is interesting to the target audience.
If I'm buying a 12V or 5V fan, it'll almost certainly be a Noctua. I don't know if they're the best, but they certainly seem to be among the better brands, and at something like $25 for a fan, they are certainly not overpriced enough to justify the effort of researching something better.
So whoever you are at Noctua, congratulations! This + the 3d model release are likely really paying off.
Noctua are pricey but they also provide service that is in my experience unmatched.
We have a few hundred of their coolers in use and I have never had an issue getting warranty replacements from them with fans. The process is simple and they ship out a new fan ( I have warrantied probably 10 - 15 of the fans)
Not all marketing is bad. Many of the beloved cartoons from decades ago were meant as marketing materials for toys and various kid items (i.e. lunch boxes). It doesn't mean it's automatically soulless.
In this case, I finally understand why they chose their most iconic colors, and appreciate the time they take on precision engineering.
I enjoyed reading this. As others have said, it's both interesting and good marketing communication.
I'm a dev and for the last year I've been working for a company that manufactures pretty complex and advanced machines. I work with proper engineers - electronic, electrical, control, mechanical - and actual scientists. One of the things I've come to appreciate from this is the hidden depts of detail and complexity in so many aspects of the objects that surround us. People work hard on small details that hide in the background but are vital to making things work. And there's often code in everything, all the way down.
And now I can add plastic injection moulding to that. The rabbit hole goes very deep.
Edit to add:
My dad worked forty-plus years as an engineering pattern maker. He made, by hand, the high-tolerance wooden "negatives" that were used to form moulds made from sand and resin. The moulds were used to cast parts for industrial valves: molten brass and gunmetal was poured into them, in a foundry, and left to cool. I think he would have deeply appreciated what this article was saying about craft and engineering and patience.
When it comes to industrial manufacturing, a think of lot of people are not realizing (by lack of education on the matter in general knowledge or schooling) the difference between levels of manufacturing, the precision required for some things, and how the hard part is having the full chain (making the tool that can make the tool that can make the tool that ...) because you can't jump from nothing to milimeter precision.
Also known as "why did China who already owned world manufacturing insisted and struggled on making ballpoint pen until 2017", "why are car manufacturers not making random cheap cars that have the curbs of beloved sports cars", "why are barely 5-6 countries able to make decent jet engines" and all that.
Manufacturing is hard. It's built upon layers and layers of deep knowledge and abilities. And when don't have it or you lose it, just knowing how to make the last layer is not enough, you need to rebuild the entire stack.
Which in this case becomes "painting something black is easy, making a fan black is easy, making a high quality high precision fan black from the starting point of the same fan in another color is an industrial challenge".
We are so used to high quality high precision manufacturing, we have a bazillion factories pumping out millions of very high tech things for random usages or tools now and we stopped noticing it ... And then someone makes a small mistake and you get a "Samsung Note 7 explodes randomly" because of a margin of error small than what our brain can easily comprehend.
(I did a couple months of industrial engineering in university and while it wasn't for me, I loved what I learned about the field)
A lot of times it's cheaper to just full send it than produce a full run at a given quality with a low rejection rate.
The "old" way of making a black fan is you just QC check them, send the good ones to Noctua, send the crappy ones to someone who DGAF because they're putting them some sort of industrial appliance that needs airflow through the box.
Everyone "wins" this way because Noctua gets their fan to spec cheaper and the people building plasma cutters or control units for chemical washers or ATMs get a fan that's "fundamentally good" if sloppily executed and the manufacturer gets less waste. Ain't no different than how the pork belly that doesn't become your bacon becomes dog food and die lubricant.
I suspect this is where a lot of the "X compatible" power tool stuff on Amazon comes from. That and/or the repurposing of "worn out" dies.
I love Noctua, and just wish they'd branch out from PCs and build more types of fans. Our lives are filled with so much irritating noise from noisy fans. Air conditioners, kitchen extractors, hair dryers, box fans, air purifiers, vacuum cleaners, leaf blowers, car climate control & radiator fans, just to name a few. I'd happily pay a premium for quieter things.
As far as air purifiers are concerned, there are well-regarded designs you can buy that use PC fans (you can order without fans and put in your choice of fans) and furnace filters. I just got a North Box Polaris: https://aidankepo.wixsite.com/northboxsystems. Luggable supplies an equivalent for Americans.
I don't own a (stationary) PC, but I have bought Noctua for other projects due to them having good reviews. Was surprisingly hard to find good fans for my usecase, that wasn't industrial (pricey). And PC fans are easy to control.
I'm just expecting a reduction in volume, vibration, and unpleasant resonance.
In any of these categories you can already find some machines are quieter than others despite comparable air flows. So its definitely possible to reduce noise through clever engineering and precision manufacturing.
> we have implemented a tip clearance of only 0.5mm (120mm models) or 0.7mm (140mm models) in order to minimise leak flows through the gap between impeller and frame.
> Achieving such small tip clearances is essentially at the absolute limit of what injection moulding can consistently reproduce
For folks thinking about Lego tolerances [1] that are an order of magnitude tighter at 10 microns or 0.01 mm, it turns out that the largest Lego moving parts are a turntable at 50mm or so, and rotate at an rpm an order of magnitude slower (100 or so rpm vs 1200 rpm), so these tight clearances (not tolerances [2]) are quite tricky to achieve, and more importantly, maintain over the life of the product, apparently.
So if I've got the right idea, the clearances harder to achieve for a fan vs a lego piece because you're not just concerned with the static tolerances of the shape of the fan, but also the dynamic forces that will make the blades flex and bend under load.
Clearance in this case is how far away the blades have to be at rest, such that the dynamic forces the blades experience under load won't flex them outwards to the point they scrape against the enclosure. Which I'd assume has far more to do with material properties than it does the raw geometry of the blade.
Now I wish I had a high-speed camera to be able to inspect the dynamic deformation of a noctua fan. I'm curious about how rigidly they behave under load.
The plastic will also shrink and grow depending on its temperature (yes this will have a significant impact over the normal temperature range of the inside of a computer).
Yeah, everything being black on modern motherboards might look cool with RGB lighting, but makes it harder to work on. I like the older green PCBs with white PCI slots.
I also lament the demise of color coded connectors at the back. I knew to plug my speakers into the green 3.5mm jack. Now everything is black, so I need to look at the manual again to see which of the 5 connectors is the right one.
I remember being a kid when standardized port colors came 'round (what was that, part of the AC'97 spec or something?). I thought that was dumb: I knew that the speakers plugged into the third hole from the top, and that was good enough for me. ;)
Back then: I would have loved black-on-black, labelled-in-black, with black cables and and black highlights on a black background. The accessories would be black, too: Black keyboard, black featureless keycaps, black mouse, with a black mousepad, on a black desk, in a black room with black walls and black windows.
Black.
I couldn't get black back then, of course. Computers were beige. The necessary floppy and optical drives were beige. Cables were beige. Keyboards were beige. Motherboards were some moral equivalent to beige. It might be possible to get one or two components in black at some points, but the rest were going to be beige so therefore the whole thing might as well just be resolutely beige.
That really annoyed me.
But I'm not a kid anymore; I'm old. I just want stuff that works well, and that is expandable enough to do some fun and unusual computing stuff with, and that I can see so that when I'm futzing around with it then my job is easier than it would otherwise be.
I don't want RGB or a tempered glass aquarium that shatters when part of it touches a tile floor the wrong way. I don't care about having multiple choices for the color of the anodizing on the heatsinks for the RAM. I don't want water cooling when a big slow-moving fan and some heat pipes does the job very quietly, with improved simplicity therefore longevity. I'm not trying to win a cooling benchmark; I'm just trying to keep the CPU within its specified thermal range while it does work for long periods at its maximum speed. I don't care what color the fans are as long as I can't hear them.
If I want to play with RGB by making or buying some party lights, then I know how to do that. Party lights for the room (or the whole house!), not the guts of the PC. :)
Otherwise: The computer is on the floor under the desk and the USB hub is on top of the desk, and that's all I need to deal with. It is purposeful and functional. There's no style points here, but I just don't care about that anymore.
(I'll be outside yelling at clouds if anyone needs me for anything.)
This colour combo is more 1970s than 80s. 80s was more gaudy neon and transparent stuff. The 70s loved their murky browns. OK PC boxes of the 80s and 90s were all beige too but they didn't have any brown. It also fit in with manufacturing in those days: In the 70s a lot of wood was still used, whereas in the 80s everything shifted to plastics.
But whether you love or hate (as I do) the brown Noctua colours, the one thing is that they are kinda polarising. They're not a "clean fit" in any build unless you really wanna show that you use Noctua and use them as a centrepiece. Which I guess is the point of their marketing. They want to make it seem their fans are so good people are willing to put up with the colour.
Funny how the world works. People once bought cheap children’s play carpets and cut them up as car mats out of poverty. Now people pay €75 to get that same look.
Noctua is one of few companies that has not broken my trust (yet). They promise me a really good fan, they're ten toes in on the promise and they have yet to fail to deliver.
My fan broke after five? years of near 24/7 use. Customer support was very easy to reach. They sent me a new one after I sent some serial numbers as proof. They asked me then to break off a blade, and a picture of it so I didn't have to sent it back.
I really miss that they don't release white versions. In my all-white case I just can't have Noctua. The brown ones I think are extremely ugly and the black ones stand out too much.
White doesn't really look bad in any case (except perhaps a full black one). The brown is very identifiable but that's only really a point if you desire to flaunt your expensive fans. Because it will stand out too much in almost any build. I honestly don't care about that, and for a fan this price I shouldn't have to put up with hidden advertising.
But I have BeQuiet Silent Wings and they're not bad. Quietness isn't something I'm optimising for anyway as I only use my desktop for gaming and when I do I wear headphones anyway. I do want to optimise more for pressure (as I have air filters) but these fans are no worse than Noctua.
This is a really nice write up. The reason itself — why the delay — is totally within my own speculation, but the sheer quality of the writing dragged me through the whole article. That is something.
I think this shows how Noctua value their customers, including myself. I really love how they are nice to their customers — both their products and services — especially because experience like this is getting more and more scarce. I really appreciate their work.
Not in the gaming scene at all, but my thoughts were, "Why isn't black the first product developed?" Isn't that a standard, and probably has more consumer interest?
And I don't understand why they can't just mold all the colors in parallel. If brown is in production, why can't they experiment with black at the same time?
Wow this is a nice read. I never thought injection moulding precision, relative to the dimensions of the object, to be in the same ballpark of what you can achieve with photolithography in chip manufacturing. This of course makes sense because we are at the end limited by the same principles of mechanical inaccuracy.
This level of quality is why they have my business. We had a CI setup with rpi boards that needed fans (uart clock tied to cpu clock so heat meant slowing down and the uart dropped characters). I got tired of seeing random test failures on some board and driving up to the office to replace the fan that had failed. And they were loud and annoying. I ended up frustrated and expensing hundreds of dollars of noctua fans. Dead quiet, did a better job, and not even one ever failed on me.
A quiet PC is one reason I've always removed the GPU cards from used ones I've gotten. The crappy little fans on GPUs that constantly whir up and down drives me nuts.
Functional premium product at premium price. Cheaper mid-class does the job most of the way. But I suppose there is slightly better characteristics and probably higher reliability in design. Not a fake luxury like too many products these days.
I suppose we should be somewhat positive that some company still aims to deliver best possible products. Not just products with cheapest possible cost and some perceived luxury if even that.
I used to really like Noctua fans, for a while they were obviously the best fans by a significant margin.
But for all their tight tolerances and exotic materials and a high price to match, they generally don't outperform BeQuiet's more regular materials but use-focused fans that are half the price. Nor are they significantly better than Arctic's general purpose fans at a quarter the price.
It'd make more sense to just buy the fan optimized for the specific common purpose (airflow or radiator) than pay double for the Noctua for a more generalized fan, but is not the best at either common use case.
Seems like these days their target audience is those who believe their marketing materials about them being the best, instead of believing the benchmark performance data.
I have used Noctua fans in computers where they worked for a decade or so, even 24x7, until an upgrade or replacement of the computer was required by other reasons than because of the fans.
I have also had many problems caused by cheaper fans.
So now I always prefer to use rather expensive fans and power supplies, from brands with which I have accumulated many years of experience, for peace of mind.
Perhaps other brands of fans that nowadays give similar results in benchmarks also have similar reliability, but I am not willing to bet on it.
2×? Try 5× for the Noctua NF-A12x25 compared the the Arctic P12 Pro that matches or beats it in most metrics. Which isn't to say the Noctua fan is bad, it's just a luxury product for reasons other than performance.
You must not be familiar with the iPPC 3000's. A single 120mm fan moves more air than the exhaust fan in your bathroom. The 140mm encroaches on kitchen fan territory (158cfm). At static pressures slightly higher than what either of those typically has, 24/7, for years.
They're not toys. If you stick your finger into one of these it does not peacefully come to a halt, the tip of your finger gets buzzsawed off and then it stops about halfway through your fingernail.
The quality difference between various fans is absolutely huge.
I can put in a few Noctua fans and be confident they are going to last 5+ years of running 24x7. Or I can put in 25% cheaper fans and be pretty much guaranteed one or more is going to fail within the first couple years.
In my opinion, fans are never a place to cheap out when building a PC - server or desktop, whatever.
Thermalright etc. have definitely shown that a slab of metal and some generic fans can be rather quiet and easily compete with Noctua at a fraction of the cost.
It's par for the course in the premium PC parts industry. It's overkill in a way that does not impact performance at all because gamers will pay for that.
Noctua fans are still the top #1 performers in the world. You can argue that it's diminishing returns and you can get a fan with 90% of the performance for 50% of the money, but that doesn't change Noctua's position at the top.
I do not play often on my PCs. I just like well engineered devices and do have more than enough money to buy a more expensive fan every five years or so. I like the item, it works well, is silent, I’m satisfied ¯\_(ツ)_/¯
To be fair, half a millimeter isn’t even that much precision, generally speaking. You wouldn’t be anywhere close to manufacturing a working ball pen at that precision. Or even an acceptable keyboard, if we stay with plastic. With fans blades, the difficulty is probably the precision relative to the fan diameter.
The difficulty is clearance between two moving parts, with blades that deform slightly due to air pressure (at different amounts for different speeds) and with thermal expansion.
Last I checked they weren't really any quieter than their competitors at the same airflow and pressure (which is a little subjective because your curve will never match perfectly). They do have a really low number on their specs because they have a really low max RPM, but that's not really relevant when you can just lower the speed of other fans.
They're still really good fans, but a lot of this is just marketing.
At max power the Noctua NF-A12x25 has 56 CFM and 2.3 mmAq for 31dBA [1]. At 70% the Artic A12 Pro is 56 CFM, 4.3 mmAq, and 31dBA [2]. At 60% the Asus ProArt PF120 is 61 CFM, 2.6 mmAq, and 30 dBA [3].
Note that the ProArt is a bit thicker (25 vs 30 mm) and all these dBA numbers are almost certainly unobstructed airflow. The Noctua is certainly good, but it's literally over 5× the price of the Artic.
Don't Noctua fans generally go in builds made by people who like silence?
In which case they'd have silent cases with no glass panes, because those are thinner and a possible source of vibration. They may even glue (opaque) sound absorbing material to the inside of their cases.
In which case, who cares what colour the fans are?
I use Noctua for the silence but I also literally don't have any of the panels attached to my case. The main panel doesn't even fit because the DH-15[1] would stick out.
My DH-15 isn't particularly silent because the fans are silent but it's so effecient that the fans barely need to spin.
> In which case they'd have silent cases with no glass panes, because those are thinner and a possible source of vibration. They may even glue (opaque) sound absorbing material to the inside of their cases.
I'd prefer no glass, but nevertheless just bought two glass cases because no alternatives that met my requirements were available:
* Fractal Design Torrent Compact - Best cooling available for a GPU-free, air-cooled CPU system. There exists a non-glass version, but it's unavailable in North America.
* Thermaltake The Tower 300 - Smallest form-factor case that will fit a 420mm AIO cooler. Only available with glass sides.
I built a PC this year in a Meshroom S V2[1]. The NF-A14x25 G2 fans I used for the AIO didn't seem so expensive when I was spending $600 on RAM, and I was happy that they were available in black.
Not every quiet PC is built in a dense box. Good airflow with big, slow fans is working for me to cool a 9800X3D and a 5070 Ti quietly under load.
I'm firmly in the I-want-a-quiet-case-which-sits-under-a-desk-so-I-can't-see-through-the-panes-anyway camp, but I sometimes wondered if glass wouldn't actually be better, since those models appear to be heavier than their opaque brethren. So I'd expect them to vibrate less, etc.
I recently built a home server and used Noctua fans for the first time. I absolutely love how quiet they are. If I didn't know the room had my server in it and was running, I wouldn't even notice the very quiet sound of the fans.
I am running them at about 800rpm and the CPU is usually between 33~37 degrees.
When I rebuild my main PC, I will surely go with them again.
Explains why LEGO had a leg up for multiple years. You can’t just change the color pigments and hope the parts fit in the same way. Of course these times are over and other brick manufacturers caught up or overtook Lego.
> which is easy, and more like changing the colour of a carbon-fibre Formula 1 part, which requires re-calculating the weight, strength and aerodynamics.
Seems like a bit overstated for a CPU fan but I might be wrong
We don't know what Noctua's tolerance is. The clearance in this case has to account for the flexing that will inevitably happen as the fan spins around in an environment than can easily see 50C temperatures. ABS (what Lego uses) begins softening at around 40C, which will increase how much it's deforming at 1500-2500 RPM.
This is answered in the first paragraph of the article. Painting requires re-calculating the weight, strength and aerodynamics. Paint does not weigh zero, it changes the flexibility of the plastic, and the texture which changes flow.
But the article didn't give any ballpark numbers, so the interesting bit is missing, and we still know basically nothing.
It can very well be like the snake oil which makes you feel better maybe for the three seconds after you bought it. Or those gold plated audio jacks which are 0.0001% improvement in quality.
I think tips are one of the more crucial parts of a blade, so if you care about how that blade works you probably don't want the shape to deviate there.
Branding, you're never in doubt when some YouTuber is building a PC using Noctua fans. There's probably some weird psychology in the colour as well. Why would anyone want a fan in such an ugly colour, unless it's really good. The weird beige and brown is highly recognizable, and even if you already don't know about Noctua you're likely to ask questions about the fan solely based on the colour.
The black fans are really only needed by those who build show piece in those cases with glass panels, but they might equally well need white fans, which Noctua doesn't make. Personally I don't really care about the colour of my fans, you can't see them anyway.
Yes. In marketing it’s called observability, and it’s why even high end designers are writing their brand names in huge letters on goods (well also to improve IP protection)
Apple’s white earphone cables are a classic example. Back in the iPod days everyone could tell who had an iPod versus off brands (many of whom, of course, existed long before iPod).
They are enthusiast targeted brand and majority of enthusiast (heck even entry level cases) have windows in it.
Enthusiasts care about the details - airflow, cable management and of course aesthetics. Noctua doesn't. I respect their engineering/no bullshit approach, the price bump is worth it but they lost my money on multiple builds by sticking to their 'brand color'.
They're the Soylent of the fan world - everything you need but spark zero joy.
I'd be interested in seeing sales figures for same fans in their brand and other colors.
Noctua fans have a distinct look, you could say the same about black, if you want to black them out just get a case that hides them since that would look the same.
It's surprising that there's enough of a market for a fan in any alternative color that it's worthwhile to spend this amount of development time on it. There are enough marginal fan purchasers who don't buy the original colored ones and will buy the black one?
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I always expected that black was the easiest color, since you just add enough pigment to wipe out any colors from other materials. Are they implying that that brown color is the natural look of the materials they used, so the simplest to engineer?
From what I understood, any color and material involved in high precision manufacturing requires careful design and thorough testing. They likely prioritize the brown color and material due to branding, so changing this to anything else requires redoing large parts of the pipeline.
You have to redo injection moulds anyway as they have a limited life. And you can do a lot with materials too, some materials simply shrink more than others as they cool down.
Where do you draw the line though? They have an amazing reputation for quality fan products, they clearly feel it needs a new injection mould which aren't cheap investments.
I've got a Noctua NHD14 in my current build that I bought in 2011 and it performs perfectly still (including 2 free socket upgrades from Noctua).
When the additional engineering adds no extra end user value. e.g. You need the blades to be strong enough to not shatter or flex, but beyond some level of strength it adds no additional utility
> engineer it beyond what the consumers use case requires
This mindset I think is why companies tend to favor releasing slightly broken and shit stuff, instead of waiting until they feel like they made something the best it could.
While I don't think they do, I think this is a valid thing to ponder and I'm sorry it's getting downvoted.
Generally, I think it's not overengineering that's the issue, it's how the consumer need for that particular level of quality/performance is marketed to the wrong audience. Cars are the classic example. Most people who drive a car that was precision engineered for speed or offroading capability rarely if ever need that functionality.
That said, in a world of consumer good racing to the bottom and physical enshittification, I'll generally pick the item that's obviously well designed, even if beyond the capabilities I need. The alternative is often a slew of indistinguishable crap.
I mean the point the article makes - black plastic has different characteristics to brown and beige plastics, so they need to be developed separately - seems reasonable on the surface, but that doesn't explain why they do the "novelty" colours first. Especially from the way it's worded, it sound like they might have to redo the moulds going brown -> black but potentially not the other way round. So overall, it just seems like the whole article is just PR spin.
> These surface vibrations are so minute that they are not critical from a mechanical point of view (unlike e.g. vibrations due to imbalance), but they can cause serious acoustic problems. The reason for this is that when the fan is running, there is a pressure difference between the intake and the outlet side of the fan (lower pressure on the upside of the blades, higher pressure on the downside of the blades). From an aero-acoustic point of view, this situation is similar to a stereo speaker where there is higher pressure inside the chassis and lower pressure outside the chassis. In both cases, the pressure difference leads to an efficient acoustic coupling, so the surface vibration of either the blades of the fan or the membrane of the speaker is transferred to the air.
I love rotary woofers :) I hope to get one some day.
This is an interesting article, but why don’t they just start with black fans? Marketing? Feels like we know their brand now, they can lose the hideous brown and just build black fans to start with.
Here is a mirror of the article since the "vercel"(?) anti-human wall is not letting me through, https://archive.is/y5zN1
>Why does it take so long to release black fan versions? 30/04/2026
>People often wonder why the chromax.black versions of our fans take longer to launch after the classic colours. In a nutshell, the reason is that this is less like painting a wooden fence, which is easy, and more like changing the colour of a carbon-fibre Formula 1 part, which requires re-calculating the weight, strength and aerodynamics.
>Before we dive in, we need to understand how PC fans are injection moulded and produced. At its simplest, injection moulding involves melting plastic and forcing it into a steel mould, also called “tooling”, to cool down and harden into a specific shape.
>However, for high-precision engineering, this is less like making ice cubes and more like baking a complex soufflé where every degree of temperature and milligram of ingredients matters. The flow rate, cooling time, and pressure must be perfectly balanced to ensure the plastic crystallises, cools correctly, and holds its structural integrity and dimensional precision. When you introduce a new variable, like colouring pigments, that delicate balance is disrupted.
>While this is generally much less of a problem for fan designs that utilise relatively large tolerances and standard engineering plastics such as fibreglass reinforced PBT or PA, it becomes highly critical when building fans with tighter tolerances using more advanced polymers such as Sterrox® LCP. With our NF-A12x25, NF-A12x25 G2 and NF-A14x25 G2 fans that feature impellers made of this material, we have implemented a tip clearance of only 0.5mm (120mm models) or 0.7mm (140mm models) in order to minimise leak flows through the gap between impeller and frame.
>Achieving such small tip clearances is essentially at the absolute limit of what injection moulding can consistently reproduce. At this extreme tolerance level, even minor process variations and material-related factors, such as the addition of colour pigments, become highly relevant. Their influence on the dimensional precision and stability of the fan blade may be minute, but if the tolerance is only a few tenths of a millimetre, being off by a tenth or two suddenly becomes a problem.
>Colour pigments impact the injection moulding of these high-precision fans because the pigment particles behave like tiny solid fillers inside the melt. Their size, surface area, and thermal behaviour directly influence how the polymer flows into the mould, as well as how it cools and solidifies. Black pigments, which are typically carbon black, behave very differently from the beige or brown metal-oxide pigments used in our standard fans. Carbon black particles are much smaller and have a significantly higher total surface area, resulting in stronger interactions with the polymer melt. While beige and brown metal-oxide pigments are larger and have a weaker effect, carbon black alters the melt viscosity, heat absorption, and crystallisation behaviour more significantly.
>When crafting the very first mould for a new high-performance fan, multiple tuning iterations are required until the geometry, cooling, gating, and moulding parameters are perfectly stabilised. In case we run into severe issues, this may even require starting from scratch. Regardless of whether it’s regular tuning iterations or complete redesigns, these hard-earned lessons feed directly into the design of the new mould for the black version, even though it always has to be further adjusted to account for the different moulding behaviour. Since these tuning iterations and, even more so, the worst case situation where the tooling has to be changed so significantly that it has to be redone from scratch, are time-consuming and costly, creating the toolings for the black versions at the same time as those for the regular versions would introduce significant extra cost and risk. To avoid this, we only initiate the production of the toolings for black versions after the mass production of the beige and brown parts is already running smoothly and stably.
>On top of the complex process of creating and tuning the moulds, our approval and validation process for new fans includes a rigorous, long-term high-temperature test. This ensures that our fans will deliver top-tier performance far beyond their 6-year warranty, but the test alone requires several months to run, with additional time needed for preparation and evaluation. Since this validation process must be repeated for the black versions, it introduces a minimum delay of around 6 months between the release of the brown and beige fans and their chromax.black counterparts. As soon as we have to go through some iterations of mould tuning, the delay will be longer, and if we have to re-run the validation tests, we’re already looking at a minimum delay of 12 months.
>At the time of writing, we’re just about to release the chromax.black version of the NF-A12x25 G2 – around 10 months after the release of the regular beige and brown version. Hopefully, the insights we’ve shared in this post help to explain that this is actually pretty close to as fast as possible.
>PS: We’ve only covered delays that are caused by the tooling creation and validation process in this blog post. However, there is a wide range of other factors such as the availability of other components, production capacity restrictions or logistical issues that can play a role as well. For example, during the three-year gap that we had between the regular and black version of the first-generation NF-A12x25, we were in the midst of the global pandemic and dealing with a highly challenging combination of strong demand, disrupted supply chains and logistical havoc, which caused delays that went far beyond tooling-related issues.
I'm glad companies like Noctua exist that put so much thought and care into their products. I don't even mind being advertisted to when that's the case.
False, if you're printing PLA or something sure, but you can print all sorts of exotic fiber reinforced materials, and maybe if you're clever enough you can even use the anisotropy of the print to give you extra strength in the relevant directions. I'm not claiming that it's possible to 3D print noctua quality fans, especially on consumer FDM machines, but I think "inability to find a rigid enough material" is not going to be the failure mode, at least not on it's own. I could believe "inability to find a rigid enough material that can also get the required surface quality".
One of the first things mentioned on that page is:
> To protect our intellectual property, certain features – such as fan impeller geometries – have been slightly modified while remaining visually very close to the actual product.
So you do have to 3d scan them yourself if you're trying to print a copy.
Depending on what printers you have available I'll put in the work to get you a ~0.02mm deviation scan of a blade off a 120mm noctua fan I broke. I expect it to under-perform notably due to the surface texture and the lack of rigidity under load causing contact with the shroud walls at high RPMs, but I wouldn't bet my lunch on it, would be fun to find out.
Somewhat unrelated anecdotal praise of Noctua: due to various life factors, I hadn't built a PC since maybe 2010 or thereabouts - something I did relatively often before then and had quite a bit of experience with. Then a few months ago I finally did it again. Forgetting about the absurdity of the RAM situation, I gotta say my biggest surprise was cooling. I wanted a quiet media center machine. The internet and friends kept recommending Noctua. While researching, I got a bit of a cult vibe, and their prices seemed a bit stiff. But I went for it, with some hesitation.
Goddamn was I wrong! Their CPU coolers are the most well-designed, thoughtfully planned, amazingly performing consumer product I've seen in a while. 10/10, highly recommend! I'll use them for all PC cooling needs going forward.
I agree! For case fans there are cheaper, good enough alternatives for most use cases, but their coolers definitely are worth the premium. The design, manuals and specifications online are just so good compared to competitors, plus they give away free upgrade kits when new CPU sockets come available, so you could probably use same cooler for decades as you upgrade the system.
They aren't actually doing any molding themselves, the manufacturing is outsourced to companies in China and Taiwan, there is the real molding expertise.
Well as someone who does buy PC fans, let me tell you that Noctua is clearly superior. It may be just a plastic fan with some bearings, but it doesn't seem to be easily replicable because nobody has managed to do it.
And it’s quieter than many of its counterparts from other vendors. And it actually doesn’t cost that much - more expensive than cheap-o versions for sure, but then again significantly quieter, that’s their whole premise.
The devil is in the details. Noise, static pressure efficiency, reliability, bearing quality, motor quality. Yes, there's a huge brand premium too. For critical uses, using a crap fan is an absolutely stupid decision especially where damage or malfunction is likely.
In zie olden PC days™, there weren't many options for quality fans except maybe whatever random fans Delta made that generally weren't optimized for low noise or low power consumption. Ancient, no name sleeve bearing fans would almost always go out within 1-2 years at 24/7 100% duty cycle.
This seems to be AI written, or co-written, hard to tell though. It seems AI is converging on a more terse information dense style that is closer to my own, which is good but I do worry that it’ll make my writing look like AIs.
I did predict as much, I figured it would occur as a side effect of improved information density. As the models got smarter they would have more useful pints to make. On one hand it feels validating, on the other hand I am a bit worried that my written work will look like AI. While I would consider it no longer slop I do worry about a loss of relative advantage.
I don't know whether it's a sign of it being AI or not but I did find it a bit weird that within the first 3 sentences there were 2 different "less like X and more like Y" statements:
> the reason is that this is less like painting a wooden fence, which is easy, and more like changing the colour of a carbon-fibre Formula 1 part, which requires re-calculating the weight, strength and aerodynamics.
and
> this is less like making ice cubes and more like baking a complex soufflé where every degree of temperature and milligram of ingredients matters.
Not a problem, but it felt odd enough that I noticed it, so maybe that's what got them thinking it was AI written/assisted?
I consider it very well written, perhaps too well written, I think we are departing the AI slop era. I’m not decrying it as slop not worth reading, I just think it’s an interesting development.
This is content marketing executed perfectly :) Reading it, I learned something new and interesting and they had an opportunity to show off one of their differentiators against the competition (low leakage flow due to tighter tolerances) and then at the end they casually mention the new product that has just opened for pre-orders.
I enjoyed reading it. Informative and showing of their processes and giving some intricate details. And yes, the end goal is to sell products which is fine by me. I take this over any generic non-saying marketing-blurb any time.
Normally I love this kind of article too because I consider it engineering, not marketing, the product name dropping at the end just reinforces the message. But either I'm missing some details that could have been spelled our more clearly, or the engineers were taking a break when the marketers were writing some parts. I'd love to stand corrected if someone more informed has details.
> advanced polymers such as Sterrox® LCP
> we have implemented a tip clearance of only 0.5mm (120mm models) or 0.7mm (140mm models)
> Achieving such small tip clearances is essentially at the absolute limit of what injection moulding can consistently reproduce.
Typical tolerances for injection moulding are 0.1mm, or 0.03 for high precision, or even better. LEGO was said to be in the 0.01-0.03mm. So on the face of it the last statement is patently false or at least too generic, injection moulding can consistently do much better than 0.5mm. With standard injection moulding precision (0.1mm) the worst case scenario for the two parts (fan and shroud) mating would still stay comfortably below 0.5mm.
So the question to the experts, is Sterrox® LCP that much harder to work with and the marketing team just didn't understand the importance of being clear about this? Is it a decimal point typo and the numbers should be 0.05 and 0.07?
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If all advertising was this interesting maybe I wouldn't hate it
I'd love more white, personally. I also don't understand the obsession with black. For me, black objects are very difficult to observe in detail, and that irks me.
I imagine a white PC fan would look terrible if not cleaned daily or used in a room with very filtered air.
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Have we solved the yellowing? I guess many of us have memories of old and ugly yellow computers.
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Totally. I used to favor black a long time ago when most computers were still gray and the idea of having everything in black was really cool, but since realizing that details and controls are harder to discern on black, I’m all in on white and silver. It’s also less prone to showing fingerprints.
I always thought the grey Noctua Redux fans were their nicest looking offerring, despite being their lower end. I don't understand how they settled on that.
Because it's a fan and I don't want to see it, and if I must see it, I don't want it to have any color of it's own since chances are very low that whatever color it is just happens to be the perfect addition to all my other posessions next to it.
I don't understand why anyone would think this is an obsession with black.
Seems a little revealing that they tout the clearance and not the difference in efficiency.
Noctua’s fans are known for their class-leading efficiency, with a few exceptions.
The people demanding black versions of their fans for their color matched builds already know they’re the best fans in their class.
Fan tip clearance is the main driver of fan efficiency at the price bracket this fan is competing at
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Does it? Not everything is a sign of deception.
Even if it is the case, and not simple an omission to focus the narrative, does it matter? Case fans pull what 4 watts? 5 watts? Who cares if it pulls 200 milliwatts more than a competitor when it's cooling a GPU and CPU that consume more than a hundred times what it can consume
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Exactly this. Most of the time you get poorly researched articles (or nowadays, AI slop) about some topics only very remotely related to what the company actually does.
Here, the article is about something interesting that the company has expertise in (and even "insider info"), shows off that they do serious engineering, and is interesting to the target audience.
If I'm buying a 12V or 5V fan, it'll almost certainly be a Noctua. I don't know if they're the best, but they certainly seem to be among the better brands, and at something like $25 for a fan, they are certainly not overpriced enough to justify the effort of researching something better.
So whoever you are at Noctua, congratulations! This + the 3d model release are likely really paying off.
Noctua are pricey but they also provide service that is in my experience unmatched.
We have a few hundred of their coolers in use and I have never had an issue getting warranty replacements from them with fans. The process is simple and they ship out a new fan ( I have warrantied probably 10 - 15 of the fans)
Agreed, this should really be the standard for marketing materials, no flashy promises, just cool technical and curious details.
Yeah it's more marketing than anything IMO.
Not all marketing is bad. Many of the beloved cartoons from decades ago were meant as marketing materials for toys and various kid items (i.e. lunch boxes). It doesn't mean it's automatically soulless.
In this case, I finally understand why they chose their most iconic colors, and appreciate the time they take on precision engineering.
Wondering if it's just the marketing that Noctua did, and the actual mold and process engineering left to some fab in China?
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I enjoyed reading this. As others have said, it's both interesting and good marketing communication.
I'm a dev and for the last year I've been working for a company that manufactures pretty complex and advanced machines. I work with proper engineers - electronic, electrical, control, mechanical - and actual scientists. One of the things I've come to appreciate from this is the hidden depts of detail and complexity in so many aspects of the objects that surround us. People work hard on small details that hide in the background but are vital to making things work. And there's often code in everything, all the way down.
And now I can add plastic injection moulding to that. The rabbit hole goes very deep.
Edit to add:
My dad worked forty-plus years as an engineering pattern maker. He made, by hand, the high-tolerance wooden "negatives" that were used to form moulds made from sand and resin. The moulds were used to cast parts for industrial valves: molten brass and gunmetal was poured into them, in a foundry, and left to cool. I think he would have deeply appreciated what this article was saying about craft and engineering and patience.
When it comes to industrial manufacturing, a think of lot of people are not realizing (by lack of education on the matter in general knowledge or schooling) the difference between levels of manufacturing, the precision required for some things, and how the hard part is having the full chain (making the tool that can make the tool that can make the tool that ...) because you can't jump from nothing to milimeter precision.
Also known as "why did China who already owned world manufacturing insisted and struggled on making ballpoint pen until 2017", "why are car manufacturers not making random cheap cars that have the curbs of beloved sports cars", "why are barely 5-6 countries able to make decent jet engines" and all that.
Manufacturing is hard. It's built upon layers and layers of deep knowledge and abilities. And when don't have it or you lose it, just knowing how to make the last layer is not enough, you need to rebuild the entire stack.
Which in this case becomes "painting something black is easy, making a fan black is easy, making a high quality high precision fan black from the starting point of the same fan in another color is an industrial challenge".
We are so used to high quality high precision manufacturing, we have a bazillion factories pumping out millions of very high tech things for random usages or tools now and we stopped noticing it ... And then someone makes a small mistake and you get a "Samsung Note 7 explodes randomly" because of a margin of error small than what our brain can easily comprehend.
(I did a couple months of industrial engineering in university and while it wasn't for me, I loved what I learned about the field)
This analysis is missing price though.
A lot of times it's cheaper to just full send it than produce a full run at a given quality with a low rejection rate.
The "old" way of making a black fan is you just QC check them, send the good ones to Noctua, send the crappy ones to someone who DGAF because they're putting them some sort of industrial appliance that needs airflow through the box.
Everyone "wins" this way because Noctua gets their fan to spec cheaper and the people building plasma cutters or control units for chemical washers or ATMs get a fan that's "fundamentally good" if sloppily executed and the manufacturer gets less waste. Ain't no different than how the pork belly that doesn't become your bacon becomes dog food and die lubricant.
I suspect this is where a lot of the "X compatible" power tool stuff on Amazon comes from. That and/or the repurposing of "worn out" dies.
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I love Noctua, and just wish they'd branch out from PCs and build more types of fans. Our lives are filled with so much irritating noise from noisy fans. Air conditioners, kitchen extractors, hair dryers, box fans, air purifiers, vacuum cleaners, leaf blowers, car climate control & radiator fans, just to name a few. I'd happily pay a premium for quieter things.
As far as air purifiers are concerned, there are well-regarded designs you can buy that use PC fans (you can order without fans and put in your choice of fans) and furnace filters. I just got a North Box Polaris: https://aidankepo.wixsite.com/northboxsystems. Luggable supplies an equivalent for Americans.
I’m getting tired of the grayscale colors of the 2010’s too. I could use more brown and beige in my life.
https://a.co/d/0eRatANA
Have you tried Vornado’s alchemy line? I splurged on it due to similar feelings and have been quite pleased. I use the petit as a desk fan.
They do have industrial fan series
I don't own a (stationary) PC, but I have bought Noctua for other projects due to them having good reviews. Was surprisingly hard to find good fans for my usecase, that wasn't industrial (pricey). And PC fans are easy to control.
I'm not sure what you're expecting but it simply isn't possible to move the volumes of air those things utilize without making noise.
I would suggest taking that money and buying larger speakers
I'm just expecting a reduction in volume, vibration, and unpleasant resonance.
In any of these categories you can already find some machines are quieter than others despite comparable air flows. So its definitely possible to reduce noise through clever engineering and precision manufacturing.
I don’t think we need complete silence? Surely we can have something better?
> we have implemented a tip clearance of only 0.5mm (120mm models) or 0.7mm (140mm models) in order to minimise leak flows through the gap between impeller and frame.
> Achieving such small tip clearances is essentially at the absolute limit of what injection moulding can consistently reproduce
For folks thinking about Lego tolerances [1] that are an order of magnitude tighter at 10 microns or 0.01 mm, it turns out that the largest Lego moving parts are a turntable at 50mm or so, and rotate at an rpm an order of magnitude slower (100 or so rpm vs 1200 rpm), so these tight clearances (not tolerances [2]) are quite tricky to achieve, and more importantly, maintain over the life of the product, apparently.
[1] https://en.wikipedia.org/wiki/Lego?#Design
[2] changed 'tolerances' to 'clearances' per note below
So if I've got the right idea, the clearances harder to achieve for a fan vs a lego piece because you're not just concerned with the static tolerances of the shape of the fan, but also the dynamic forces that will make the blades flex and bend under load.
Clearance in this case is how far away the blades have to be at rest, such that the dynamic forces the blades experience under load won't flex them outwards to the point they scrape against the enclosure. Which I'd assume has far more to do with material properties than it does the raw geometry of the blade.
Now I wish I had a high-speed camera to be able to inspect the dynamic deformation of a noctua fan. I'm curious about how rigidly they behave under load.
The plastic will also shrink and grow depending on its temperature (yes this will have a significant impact over the normal temperature range of the inside of a computer).
0.5mm is the clearance, not the tolerance. Tolerance must be significantly smaller than clearance.
yes, good point. fixed.
I like the brown ones. Everything is black, it's dumb, and I'm happy to have any contrast.
Yeah, everything being black on modern motherboards might look cool with RGB lighting, but makes it harder to work on. I like the older green PCBs with white PCI slots.
I also lament the demise of color coded connectors at the back. I knew to plug my speakers into the green 3.5mm jack. Now everything is black, so I need to look at the manual again to see which of the 5 connectors is the right one.
I remember being a kid when standardized port colors came 'round (what was that, part of the AC'97 spec or something?). I thought that was dumb: I knew that the speakers plugged into the third hole from the top, and that was good enough for me. ;)
Back then: I would have loved black-on-black, labelled-in-black, with black cables and and black highlights on a black background. The accessories would be black, too: Black keyboard, black featureless keycaps, black mouse, with a black mousepad, on a black desk, in a black room with black walls and black windows.
Black.
I couldn't get black back then, of course. Computers were beige. The necessary floppy and optical drives were beige. Cables were beige. Keyboards were beige. Motherboards were some moral equivalent to beige. It might be possible to get one or two components in black at some points, but the rest were going to be beige so therefore the whole thing might as well just be resolutely beige.
That really annoyed me.
But I'm not a kid anymore; I'm old. I just want stuff that works well, and that is expandable enough to do some fun and unusual computing stuff with, and that I can see so that when I'm futzing around with it then my job is easier than it would otherwise be.
I don't want RGB or a tempered glass aquarium that shatters when part of it touches a tile floor the wrong way. I don't care about having multiple choices for the color of the anodizing on the heatsinks for the RAM. I don't want water cooling when a big slow-moving fan and some heat pipes does the job very quietly, with improved simplicity therefore longevity. I'm not trying to win a cooling benchmark; I'm just trying to keep the CPU within its specified thermal range while it does work for long periods at its maximum speed. I don't care what color the fans are as long as I can't hear them.
If I want to play with RGB by making or buying some party lights, then I know how to do that. Party lights for the room (or the whole house!), not the guts of the PC. :)
Otherwise: The computer is on the floor under the desk and the USB hub is on top of the desk, and that's all I need to deal with. It is purposeful and functional. There's no style points here, but I just don't care about that anymore.
(I'll be outside yelling at clouds if anyone needs me for anything.)
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> everything being black on modern motherboards might look cool with RGB lighting
I always figured white would look better for RGB-lit computers. I don't know why white is so rare.
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Me too. All my computers have Noctua fans and I don't care in the slightest that they're the same colour as my parents' sofa in the 1980s.
I have a couple of their screwdrivers too. I'm with with brown.
This colour combo is more 1970s than 80s. 80s was more gaudy neon and transparent stuff. The 70s loved their murky browns. OK PC boxes of the 80s and 90s were all beige too but they didn't have any brown. It also fit in with manufacturing in those days: In the 70s a lot of wood was still used, whereas in the 80s everything shifted to plastics.
But whether you love or hate (as I do) the brown Noctua colours, the one thing is that they are kinda polarising. They're not a "clean fit" in any build unless you really wanna show that you use Noctua and use them as a centrepiece. Which I guess is the point of their marketing. They want to make it seem their fans are so good people are willing to put up with the colour.
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Preference. Some people like their PCs to look like a rainbow alien LED spaceship, others would go for vanta black if they could get it
Stuart Semple changed his name to Anish Kapoor, because only Anish Kapoor has the rights to use Vantablack for artistic purposes.
I think there might also be export restrictions, but I'm not sure.
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The beige/brown fans give me a woodgrain vibe more than anything. Straight white would probably be more popular with LED folks imo.
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I'm at an age where I feel the same about many things in life. Black, sleek and minimalist is so boring and blends into the background.
Just this morning I purchased these car mats for my black, korean-spec-tinted people carrier electric van:
https://carmats.ie/products/kia-pv5-passenger-2026-van-mats?...
Funny how the world works. People once bought cheap children’s play carpets and cut them up as car mats out of poverty. Now people pay €75 to get that same look.
On sidenote: I'm quite interested in the PV5 and have only seen one in the wild so far. How is it for you? And how is the range in practice.
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Agreed. It's like Tatooine themed from Star Wars
Black is some weird masculine thing where it all has to be “tactical”
[flagged]
Some of my friends are beige
I've heard that the black fans go to more shows, but the white fans buy more albums.
Booooooooooo
Noctua is one of few companies that has not broken my trust (yet). They promise me a really good fan, they're ten toes in on the promise and they have yet to fail to deliver.
My fan broke after five? years of near 24/7 use. Customer support was very easy to reach. They sent me a new one after I sent some serial numbers as proof. They asked me then to break off a blade, and a picture of it so I didn't have to sent it back.
I get why. But that still seems wasteful
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Yeah, their products are expensive but every one of them proved high quality and reliable.
They have many dedicated fans, both mechanical and biological.
I really miss that they don't release white versions. In my all-white case I just can't have Noctua. The brown ones I think are extremely ugly and the black ones stand out too much.
White doesn't really look bad in any case (except perhaps a full black one). The brown is very identifiable but that's only really a point if you desire to flaunt your expensive fans. Because it will stand out too much in almost any build. I honestly don't care about that, and for a fan this price I shouldn't have to put up with hidden advertising.
But I have BeQuiet Silent Wings and they're not bad. Quietness isn't something I'm optimising for anyway as I only use my desktop for gaming and when I do I wear headphones anyway. I do want to optimise more for pressure (as I have air filters) but these fans are no worse than Noctua.
Just make a brown case (maybe with some walnut accents?) and the brown Noctua fans will be a perfect fit.
Alternative - return to tradition with beige - https://www.silverstonetek.com/en/product/info/computer-chas...
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Then I have to look at that brown thing all day :) Yuck
I like wood but only light wood, not the dark kind. That reminds me way too much of my grandparents' furniture.
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Buy a Fractal North.
https://www.fractal-design.com/products/cases/north/north/ch...
https://www.fractal-design.com/products/cases/north/north/ch...
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Anyone else getting the optical illusion of the fans spinning in your peripheral vision while reading the top paragraphs?
Yep! Made me look a few times to make sure they weren't actually spinning.
Yup.
This is a really nice write up. The reason itself — why the delay — is totally within my own speculation, but the sheer quality of the writing dragged me through the whole article. That is something.
I think this shows how Noctua value their customers, including myself. I really love how they are nice to their customers — both their products and services — especially because experience like this is getting more and more scarce. I really appreciate their work.
It's refreshing to see something without any AI slop for once. The fact that this aspect is so exciting is so sad.
Not in the gaming scene at all, but my thoughts were, "Why isn't black the first product developed?" Isn't that a standard, and probably has more consumer interest?
And I don't understand why they can't just mold all the colors in parallel. If brown is in production, why can't they experiment with black at the same time?
Wow this is a nice read. I never thought injection moulding precision, relative to the dimensions of the object, to be in the same ballpark of what you can achieve with photolithography in chip manufacturing. This of course makes sense because we are at the end limited by the same principles of mechanical inaccuracy.
If you need that kind of precision, yes.
But I don't think they really need that.
This level of quality is why they have my business. We had a CI setup with rpi boards that needed fans (uart clock tied to cpu clock so heat meant slowing down and the uart dropped characters). I got tired of seeing random test failures on some board and driving up to the office to replace the fan that had failed. And they were loud and annoying. I ended up frustrated and expensing hundreds of dollars of noctua fans. Dead quiet, did a better job, and not even one ever failed on me.
A quiet PC is one reason I've always removed the GPU cards from used ones I've gotten. The crappy little fans on GPUs that constantly whir up and down drives me nuts.
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It's luxury watch engineering for gamers. You do not need it, but it's kind of charming when anyone competently takes a niche to its extreme, imho.
That said, on my last PC build I ended up buying Pure Wings 3, which are quite competitively silent at similar airflow and much cheaper.
And white. Because I do like silly pretty PCs, as long as they don't have RGB on.
https://eikehein.com/pc/pc2.webp
Functional premium product at premium price. Cheaper mid-class does the job most of the way. But I suppose there is slightly better characteristics and probably higher reliability in design. Not a fake luxury like too many products these days.
I suppose we should be somewhat positive that some company still aims to deliver best possible products. Not just products with cheapest possible cost and some perceived luxury if even that.
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I used to really like Noctua fans, for a while they were obviously the best fans by a significant margin.
But for all their tight tolerances and exotic materials and a high price to match, they generally don't outperform BeQuiet's more regular materials but use-focused fans that are half the price. Nor are they significantly better than Arctic's general purpose fans at a quarter the price.
It'd make more sense to just buy the fan optimized for the specific common purpose (airflow or radiator) than pay double for the Noctua for a more generalized fan, but is not the best at either common use case.
Seems like these days their target audience is those who believe their marketing materials about them being the best, instead of believing the benchmark performance data.
The benchmarks do not tell everything.
I have used Noctua fans in computers where they worked for a decade or so, even 24x7, until an upgrade or replacement of the computer was required by other reasons than because of the fans.
I have also had many problems caused by cheaper fans.
So now I always prefer to use rather expensive fans and power supplies, from brands with which I have accumulated many years of experience, for peace of mind.
Perhaps other brands of fans that nowadays give similar results in benchmarks also have similar reliability, but I am not willing to bet on it.
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2×? Try 5× for the Noctua NF-A12x25 compared the the Arctic P12 Pro that matches or beats it in most metrics. Which isn't to say the Noctua fan is bad, it's just a luxury product for reasons other than performance.
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I got a cheap CPU cooler and swapped the fan out for a Noctua. For half the cost of a complete Noctua CPU cooler I got good temperatures and no noise.
You must not be familiar with the iPPC 3000's. A single 120mm fan moves more air than the exhaust fan in your bathroom. The 140mm encroaches on kitchen fan territory (158cfm). At static pressures slightly higher than what either of those typically has, 24/7, for years.
They're not toys. If you stick your finger into one of these it does not peacefully come to a halt, the tip of your finger gets buzzsawed off and then it stops about halfway through your fingernail.
(The i stands for industrial)
If they didn't go to these length, they wouldn't be the brand that they are. They would just be one of any other random fan manufacturer.
If you're okay with some of your fans being noisy and/or inefficient, I'm sure you can work with flimsy tolerances.
The quality difference between various fans is absolutely huge.
I can put in a few Noctua fans and be confident they are going to last 5+ years of running 24x7. Or I can put in 25% cheaper fans and be pretty much guaranteed one or more is going to fail within the first couple years.
In my opinion, fans are never a place to cheap out when building a PC - server or desktop, whatever.
Thermalright etc. have definitely shown that a slab of metal and some generic fans can be rather quiet and easily compete with Noctua at a fraction of the cost.
It's par for the course in the premium PC parts industry. It's overkill in a way that does not impact performance at all because gamers will pay for that.
> does not impact performance at all
Noctua fans are still the top #1 performers in the world. You can argue that it's diminishing returns and you can get a fan with 90% of the performance for 50% of the money, but that doesn't change Noctua's position at the top.
I do not play often on my PCs. I just like well engineered devices and do have more than enough money to buy a more expensive fan every five years or so. I like the item, it works well, is silent, I’m satisfied ¯\_(ツ)_/¯
To be fair, half a millimeter isn’t even that much precision, generally speaking. You wouldn’t be anywhere close to manufacturing a working ball pen at that precision. Or even an acceptable keyboard, if we stay with plastic. With fans blades, the difficulty is probably the precision relative to the fan diameter.
The difficulty is clearance between two moving parts, with blades that deform slightly due to air pressure (at different amounts for different speeds) and with thermal expansion.
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They want them to be really silent. There's more details here: https://www.noctua.at/en/expertise/tech/nf-a12x25-technical-...
Last I checked they weren't really any quieter than their competitors at the same airflow and pressure (which is a little subjective because your curve will never match perfectly). They do have a really low number on their specs because they have a really low max RPM, but that's not really relevant when you can just lower the speed of other fans.
They're still really good fans, but a lot of this is just marketing.
At max power the Noctua NF-A12x25 has 56 CFM and 2.3 mmAq for 31dBA [1]. At 70% the Artic A12 Pro is 56 CFM, 4.3 mmAq, and 31dBA [2]. At 60% the Asus ProArt PF120 is 61 CFM, 2.6 mmAq, and 30 dBA [3].
Note that the ProArt is a bit thicker (25 vs 30 mm) and all these dBA numbers are almost certainly unobstructed airflow. The Noctua is certainly good, but it's literally over 5× the price of the Artic.
[1]: https://www.cybenetics.com/evaluations/fans/4/
[2]: https://www.cybenetics.com/evaluations/fans/175/
[3]: https://www.cybenetics.com/evaluations/fans/229/
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It's like the gold plated headphone jacks they used to sell to audiophiles.
Don't Noctua fans generally go in builds made by people who like silence?
In which case they'd have silent cases with no glass panes, because those are thinner and a possible source of vibration. They may even glue (opaque) sound absorbing material to the inside of their cases.
In which case, who cares what colour the fans are?
I use Noctua for the silence but I also literally don't have any of the panels attached to my case. The main panel doesn't even fit because the DH-15[1] would stick out.
My DH-15 isn't particularly silent because the fans are silent but it's so effecient that the fans barely need to spin.
[1]: https://www.noctua.at/en/products/nh-d15
> In which case they'd have silent cases with no glass panes, because those are thinner and a possible source of vibration. They may even glue (opaque) sound absorbing material to the inside of their cases.
I'd prefer no glass, but nevertheless just bought two glass cases because no alternatives that met my requirements were available:
* Fractal Design Torrent Compact - Best cooling available for a GPU-free, air-cooled CPU system. There exists a non-glass version, but it's unavailable in North America.
* Thermaltake The Tower 300 - Smallest form-factor case that will fit a 420mm AIO cooler. Only available with glass sides.
I built a PC this year in a Meshroom S V2[1]. The NF-A14x25 G2 fans I used for the AIO didn't seem so expensive when I was spending $600 on RAM, and I was happy that they were available in black.
Not every quiet PC is built in a dense box. Good airflow with big, slow fans is working for me to cool a 9800X3D and a 5070 Ti quietly under load.
[1]: https://ssupd.co/products/cases-meshroom-s-v2
I had once a mesh case, i forgot by who, but it wasn't the cheapest. Too noisy if you ask me.
The one you linked is all mesh so it doesn't capture noise anywhere. It's great if you like it, but I'd never consider it.
I'm firmly in the I-want-a-quiet-case-which-sits-under-a-desk-so-I-can't-see-through-the-panes-anyway camp, but I sometimes wondered if glass wouldn't actually be better, since those models appear to be heavier than their opaque brethren. So I'd expect them to vibrate less, etc.
Maybe, but it seems like a waste to glue the paxmate to the inside of the glass :)
I recently built a home server and used Noctua fans for the first time. I absolutely love how quiet they are. If I didn't know the room had my server in it and was running, I wouldn't even notice the very quiet sound of the fans.
I am running them at about 800rpm and the CPU is usually between 33~37 degrees.
When I rebuild my main PC, I will surely go with them again.
Explains why LEGO had a leg up for multiple years. You can’t just change the color pigments and hope the parts fit in the same way. Of course these times are over and other brick manufacturers caught up or overtook Lego.
Overtook Lego? In what way, quality of the bricks? Because Lego is still the largest toy company in the world by revenue.
Brittle Brown!
LEGO issued an official apology and you can get replacements for your brown bricks made before 2018. (=
https://brickshow.com/2018/12/problem-lego-reddish-brown-bri...
WHY SWEAT IT? Your brand is a non-black fan. I'd stay with that. Why confuse people. Maybe trademark your fans colors.
> which is easy, and more like changing the colour of a carbon-fibre Formula 1 part, which requires re-calculating the weight, strength and aerodynamics.
Seems like a bit overstated for a CPU fan but I might be wrong
So the lesson here is to wait for the black part to become available, then buy the beige or brown because you know their teething problems are gone?
Isn’t the Lego Group incredible at this? Their parts are tiny, all different colors, and their tolerances are incredible.
We don't know what Noctua's tolerance is. The clearance in this case has to account for the flexing that will inevitably happen as the fan spins around in an environment than can easily see 50C temperatures. ABS (what Lego uses) begins softening at around 40C, which will increase how much it's deforming at 1500-2500 RPM.
Interestingly enough, I just read about the brown Lego issues earlier today: https://blocksmag.com/brittle-bricks-the-lego-groups-biggest...
Lego is quite impressive, but most of their parts are static and not moving at 500-2000rpm, so they're optimizing for a different problem.
Like how USSR had issues getting black bakelite components for guns.
My layman question is why plastic cant be painted? Case temperatures are not that high and there are no plastic parts rubbbing.
This is answered in the first paragraph of the article. Painting requires re-calculating the weight, strength and aerodynamics. Paint does not weigh zero, it changes the flexibility of the plastic, and the texture which changes flow.
But the article didn't give any ballpark numbers, so the interesting bit is missing, and we still know basically nothing.
It can very well be like the snake oil which makes you feel better maybe for the three seconds after you bought it. Or those gold plated audio jacks which are 0.0001% improvement in quality.
This is a delightful post, I'll be sticky with the classic colours letting them proudly display what they are
I wonder why they can't just get the last half a mm of accuracy by just grinding down the tips
Grinding down plastic doesn’t leave a smooth surface, which is why this generally isn’t done, and would especially impact the air flow on a fan.
I think tips are one of the more crucial parts of a blade, so if you care about how that blade works you probably don't want the shape to deviate there.
Why would someone want a beige or brown fan? If it is that complicated why not only make black ones?
Branding, you're never in doubt when some YouTuber is building a PC using Noctua fans. There's probably some weird psychology in the colour as well. Why would anyone want a fan in such an ugly colour, unless it's really good. The weird beige and brown is highly recognizable, and even if you already don't know about Noctua you're likely to ask questions about the fan solely based on the colour.
The black fans are really only needed by those who build show piece in those cases with glass panels, but they might equally well need white fans, which Noctua doesn't make. Personally I don't really care about the colour of my fans, you can't see them anyway.
Yes. In marketing it’s called observability, and it’s why even high end designers are writing their brand names in huge letters on goods (well also to improve IP protection)
Apple’s white earphone cables are a classic example. Back in the iPod days everyone could tell who had an iPod versus off brands (many of whom, of course, existed long before iPod).
They are enthusiast targeted brand and majority of enthusiast (heck even entry level cases) have windows in it.
Enthusiasts care about the details - airflow, cable management and of course aesthetics. Noctua doesn't. I respect their engineering/no bullshit approach, the price bump is worth it but they lost my money on multiple builds by sticking to their 'brand color'.
They're the Soylent of the fan world - everything you need but spark zero joy.
I'd be interested in seeing sales figures for same fans in their brand and other colors.
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Noctua fans have a distinct look, you could say the same about black, if you want to black them out just get a case that hides them since that would look the same.
Who's looking at a damn fan? My lord. This is like caring what colour the filters in my air conditioner are.
Idiots will have anything marketed to them.
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It's surprising that there's enough of a market for a fan in any alternative color that it's worthwhile to spend this amount of development time on it. There are enough marginal fan purchasers who don't buy the original colored ones and will buy the black one?
Why do Ferraris seem to almost always made in red?
Because nobody wants a brown one?
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It's called Resale Red for a reason.
Because I like the brown/beige colors?
Hi there! I want to talk to you about ducts. Do your ducts seem old-fashioned, out of date? Central Services' new duct designs are now available in hundreds of different colours, to suit your individual taste. Hurry now, while stocks last, to your nearest Central Services showroom! Designer colours to suit your demanding taste.
damn... you should change password...
Haha, maybe we can help him
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I always expected that black was the easiest color, since you just add enough pigment to wipe out any colors from other materials. Are they implying that that brown color is the natural look of the materials they used, so the simplest to engineer?
From what I understood, any color and material involved in high precision manufacturing requires careful design and thorough testing. They likely prioritize the brown color and material due to branding, so changing this to anything else requires redoing large parts of the pipeline.
Large parts is kinda exaggerated.
You have to redo injection moulds anyway as they have a limited life. And you can do a lot with materials too, some materials simply shrink more than others as they cool down.
I sometimes wonder whether they have an culture that overengineers tbh.
The thoroughness & mindset is certainly appreciated, but you can also overdo it - engineer it beyond what the consumers use case requires.
Where do you draw the line though? They have an amazing reputation for quality fan products, they clearly feel it needs a new injection mould which aren't cheap investments.
I've got a Noctua NHD14 in my current build that I bought in 2011 and it performs perfectly still (including 2 free socket upgrades from Noctua).
> Where do you draw the line though?
When the additional engineering adds no extra end user value. e.g. You need the blades to be strong enough to not shatter or flex, but beyond some level of strength it adds no additional utility
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> engineer it beyond what the consumers use case requires
This mindset I think is why companies tend to favor releasing slightly broken and shit stuff, instead of waiting until they feel like they made something the best it could.
While I don't think they do, I think this is a valid thing to ponder and I'm sorry it's getting downvoted.
Generally, I think it's not overengineering that's the issue, it's how the consumer need for that particular level of quality/performance is marketed to the wrong audience. Cars are the classic example. Most people who drive a car that was precision engineered for speed or offroading capability rarely if ever need that functionality.
That said, in a world of consumer good racing to the bottom and physical enshittification, I'll generally pick the item that's obviously well designed, even if beyond the capabilities I need. The alternative is often a slew of indistinguishable crap.
WHITE VERSIONS PLEASE
I mean the point the article makes - black plastic has different characteristics to brown and beige plastics, so they need to be developed separately - seems reasonable on the surface, but that doesn't explain why they do the "novelty" colours first. Especially from the way it's worded, it sound like they might have to redo the moulds going brown -> black but potentially not the other way round. So overall, it just seems like the whole article is just PR spin.
> These surface vibrations are so minute that they are not critical from a mechanical point of view (unlike e.g. vibrations due to imbalance), but they can cause serious acoustic problems. The reason for this is that when the fan is running, there is a pressure difference between the intake and the outlet side of the fan (lower pressure on the upside of the blades, higher pressure on the downside of the blades). From an aero-acoustic point of view, this situation is similar to a stereo speaker where there is higher pressure inside the chassis and lower pressure outside the chassis. In both cases, the pressure difference leads to an efficient acoustic coupling, so the surface vibration of either the blades of the fan or the membrane of the speaker is transferred to the air.
I love rotary woofers :) I hope to get one some day.
This is an interesting article, but why don’t they just start with black fans? Marketing? Feels like we know their brand now, they can lose the hideous brown and just build black fans to start with.
Just paint it black, no one will care, you'll save money and sell more units.
Reminds me of this story from lego:
His dad made him redo the lot.
Source: https://www.lego.com/en-us/history/articles/b-the-beginning-...
I think I have 20 or so Noctua fans from 80 to 200 mm from 1-8 years old, haven't had a bearing or motor failure yet. Cross fingers.
Here is a mirror of the article since the "vercel"(?) anti-human wall is not letting me through, https://archive.is/y5zN1
>Why does it take so long to release black fan versions? 30/04/2026
>People often wonder why the chromax.black versions of our fans take longer to launch after the classic colours. In a nutshell, the reason is that this is less like painting a wooden fence, which is easy, and more like changing the colour of a carbon-fibre Formula 1 part, which requires re-calculating the weight, strength and aerodynamics.
>Before we dive in, we need to understand how PC fans are injection moulded and produced. At its simplest, injection moulding involves melting plastic and forcing it into a steel mould, also called “tooling”, to cool down and harden into a specific shape.
>However, for high-precision engineering, this is less like making ice cubes and more like baking a complex soufflé where every degree of temperature and milligram of ingredients matters. The flow rate, cooling time, and pressure must be perfectly balanced to ensure the plastic crystallises, cools correctly, and holds its structural integrity and dimensional precision. When you introduce a new variable, like colouring pigments, that delicate balance is disrupted.
>While this is generally much less of a problem for fan designs that utilise relatively large tolerances and standard engineering plastics such as fibreglass reinforced PBT or PA, it becomes highly critical when building fans with tighter tolerances using more advanced polymers such as Sterrox® LCP. With our NF-A12x25, NF-A12x25 G2 and NF-A14x25 G2 fans that feature impellers made of this material, we have implemented a tip clearance of only 0.5mm (120mm models) or 0.7mm (140mm models) in order to minimise leak flows through the gap between impeller and frame.
>Achieving such small tip clearances is essentially at the absolute limit of what injection moulding can consistently reproduce. At this extreme tolerance level, even minor process variations and material-related factors, such as the addition of colour pigments, become highly relevant. Their influence on the dimensional precision and stability of the fan blade may be minute, but if the tolerance is only a few tenths of a millimetre, being off by a tenth or two suddenly becomes a problem.
>Colour pigments impact the injection moulding of these high-precision fans because the pigment particles behave like tiny solid fillers inside the melt. Their size, surface area, and thermal behaviour directly influence how the polymer flows into the mould, as well as how it cools and solidifies. Black pigments, which are typically carbon black, behave very differently from the beige or brown metal-oxide pigments used in our standard fans. Carbon black particles are much smaller and have a significantly higher total surface area, resulting in stronger interactions with the polymer melt. While beige and brown metal-oxide pigments are larger and have a weaker effect, carbon black alters the melt viscosity, heat absorption, and crystallisation behaviour more significantly.
>When crafting the very first mould for a new high-performance fan, multiple tuning iterations are required until the geometry, cooling, gating, and moulding parameters are perfectly stabilised. In case we run into severe issues, this may even require starting from scratch. Regardless of whether it’s regular tuning iterations or complete redesigns, these hard-earned lessons feed directly into the design of the new mould for the black version, even though it always has to be further adjusted to account for the different moulding behaviour. Since these tuning iterations and, even more so, the worst case situation where the tooling has to be changed so significantly that it has to be redone from scratch, are time-consuming and costly, creating the toolings for the black versions at the same time as those for the regular versions would introduce significant extra cost and risk. To avoid this, we only initiate the production of the toolings for black versions after the mass production of the beige and brown parts is already running smoothly and stably.
>On top of the complex process of creating and tuning the moulds, our approval and validation process for new fans includes a rigorous, long-term high-temperature test. This ensures that our fans will deliver top-tier performance far beyond their 6-year warranty, but the test alone requires several months to run, with additional time needed for preparation and evaluation. Since this validation process must be repeated for the black versions, it introduces a minimum delay of around 6 months between the release of the brown and beige fans and their chromax.black counterparts. As soon as we have to go through some iterations of mould tuning, the delay will be longer, and if we have to re-run the validation tests, we’re already looking at a minimum delay of 12 months.
>At the time of writing, we’re just about to release the chromax.black version of the NF-A12x25 G2 – around 10 months after the release of the regular beige and brown version. Hopefully, the insights we’ve shared in this post help to explain that this is actually pretty close to as fast as possible.
>PS: We’ve only covered delays that are caused by the tooling creation and validation process in this blog post. However, there is a wide range of other factors such as the availability of other components, production capacity restrictions or logistical issues that can play a role as well. For example, during the three-year gap that we had between the regular and black version of the first-generation NF-A12x25, we were in the midst of the global pandemic and dealing with a highly challenging combination of strong demand, disrupted supply chains and logistical havoc, which caused delays that went far beyond tooling-related issues.
Blue. Make blue fans.
Their fans are expensive but work well. I am fine with the normal colored versions.
I love how we've come full circle and started wood paneling our electronics again.
Interesting.
I'm glad companies like Noctua exist that put so much thought and care into their products. I don't even mind being advertisted to when that's the case.
Reading about this, just makes me wish I has good 3d scan of their impellers to see how a simple 3d printer will deal with such mythical precision.
The materials that you could use in a 3d printer are not rigid enough.
The blades of the fans are fiber-reinforced, in order to have sufficient rigidity, even when very thin.
Only a 3D printer for metals could print something rigid enough, but such a metallic fan would be too heavy for a computer fan.
False, if you're printing PLA or something sure, but you can print all sorts of exotic fiber reinforced materials, and maybe if you're clever enough you can even use the anisotropy of the print to give you extra strength in the relevant directions. I'm not claiming that it's possible to 3D print noctua quality fans, especially on consumer FDM machines, but I think "inability to find a rigid enough material" is not going to be the failure mode, at least not on it's own. I could believe "inability to find a rigid enough material that can also get the required surface quality".
Noctua is awesome in a lot of ways, one of them is offering full CAD models: https://www.noctua.at/en/3d-cad-models
One of the first things mentioned on that page is:
> To protect our intellectual property, certain features – such as fan impeller geometries – have been slightly modified while remaining visually very close to the actual product.
So you do have to 3d scan them yourself if you're trying to print a copy.
Depending on what printers you have available I'll put in the work to get you a ~0.02mm deviation scan of a blade off a 120mm noctua fan I broke. I expect it to under-perform notably due to the surface texture and the lack of rigidity under load causing contact with the shroud walls at high RPMs, but I wouldn't bet my lunch on it, would be fun to find out.
The texture has substantial chance to actually help. Check golf balls.
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Obviously better if you print slow enough. But the fans will be weaker and you won’t be able to pump out thousands every day.
Somewhat unrelated anecdotal praise of Noctua: due to various life factors, I hadn't built a PC since maybe 2010 or thereabouts - something I did relatively often before then and had quite a bit of experience with. Then a few months ago I finally did it again. Forgetting about the absurdity of the RAM situation, I gotta say my biggest surprise was cooling. I wanted a quiet media center machine. The internet and friends kept recommending Noctua. While researching, I got a bit of a cult vibe, and their prices seemed a bit stiff. But I went for it, with some hesitation.
Goddamn was I wrong! Their CPU coolers are the most well-designed, thoughtfully planned, amazingly performing consumer product I've seen in a while. 10/10, highly recommend! I'll use them for all PC cooling needs going forward.
I agree! For case fans there are cheaper, good enough alternatives for most use cases, but their coolers definitely are worth the premium. The design, manuals and specifications online are just so good compared to competitors, plus they give away free upgrade kits when new CPU sockets come available, so you could probably use same cooler for decades as you upgrade the system.
I hope they're keeping all that data to be able to feed to ML and improve their FEA models, and to perhaps advance molding tech for everyone.
They aren't actually doing any molding themselves, the manufacturing is outsourced to companies in China and Taiwan, there is the real molding expertise.
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"Because we make the brown ones first"
I don't buy it. It's just a plastic PC fan with some bearings which does not cost that much
Well as someone who does buy PC fans, let me tell you that Noctua is clearly superior. It may be just a plastic fan with some bearings, but it doesn't seem to be easily replicable because nobody has managed to do it.
And it’s quieter than many of its counterparts from other vendors. And it actually doesn’t cost that much - more expensive than cheap-o versions for sure, but then again significantly quieter, that’s their whole premise.
Almost everything you buy "does not cost that much", that's how companyies make money.
The devil is in the details. Noise, static pressure efficiency, reliability, bearing quality, motor quality. Yes, there's a huge brand premium too. For critical uses, using a crap fan is an absolutely stupid decision especially where damage or malfunction is likely.
In zie olden PC days™, there weren't many options for quality fans except maybe whatever random fans Delta made that generally weren't optimized for low noise or low power consumption. Ancient, no name sleeve bearing fans would almost always go out within 1-2 years at 24/7 100% duty cycle.
This seems to be AI written, or co-written, hard to tell though. It seems AI is converging on a more terse information dense style that is closer to my own, which is good but I do worry that it’ll make my writing look like AIs.
"AI style" is an artifact of certain writing styles being overrepresented in training data. I expect in the long run it will be impossible to distinguish AI writing reliably. https://marcusolang.substack.com/p/im-kenyan-i-dont-write-li...
I did predict as much, I figured it would occur as a side effect of improved information density. As the models got smarter they would have more useful pints to make. On one hand it feels validating, on the other hand I am a bit worried that my written work will look like AI. While I would consider it no longer slop I do worry about a loss of relative advantage.
> This seems to be AI written, or co-written, hard to tell though.
I didn't get that at all. Calling out AI for the sake of it is the new virtue signal, unfortunately.
I don't know whether it's a sign of it being AI or not but I did find it a bit weird that within the first 3 sentences there were 2 different "less like X and more like Y" statements:
> the reason is that this is less like painting a wooden fence, which is easy, and more like changing the colour of a carbon-fibre Formula 1 part, which requires re-calculating the weight, strength and aerodynamics.
and
> this is less like making ice cubes and more like baking a complex soufflé where every degree of temperature and milligram of ingredients matters.
Not a problem, but it felt odd enough that I noticed it, so maybe that's what got them thinking it was AI written/assisted?
I consider it very well written, perhaps too well written, I think we are departing the AI slop era. I’m not decrying it as slop not worth reading, I just think it’s an interesting development.
I don’t agree, it seems pretty normal.
I also don’t really like policing writing style when there aren’t any glaring errors.