Comment by flembat
18 days ago
I have a couple of earlier RISC V systems that were advertised as nearly desktop performance: I always like unconventional systems, but cant find a reason to like these, they are much slower than similar priced arm systems, the software/hardware support is not as good, and the instruction set is also just not that interesting. Also once you run Linux, you are just running Linux, it is just like Linux only harder to install, and slower.
> I have a couple of earlier RISC V systems that were advertised as nearly desktop performance
No one with any true knowledge of RISC-V would ever make such a claim. Know-nothing marketers might, I suppose, but why would you listen to them rather than to actual insiders?
The current newest RISC-V boards (Megrez and Titan and whatever the upcoming SpacemiT K3 ones are called) are solidly in mid-range Core 2 territory, especially K3 which has SMID/vectors which the other fast chips currently don't.
Older boards using JH7110, TH1520, K1 are closer to Pentium III or PowerPC G4 though with 4 or 8 cores instead of 1, but without an equivalent to the SSE or Altivec SIMD those old, or if they have it with near zero software using it.
Late this year is expected to see RISC-V products with performance in Skylake to Zen 2 performance levels, verging on M1 (M1 IPC but lower MHz).
> they are much slower than similar priced arm systems
Irrelevant to the technology. They are competitive with similar µarch (five years older) Arm systems.
Price can never be competitive (assuming no deliberate loss-making) until production and sales volumes are similar. Which can't happen until performance matches current Arm and X86 performance -- which RISC-V is converging with quite quickly, certainly by 2030.
While your points are fair, whoever told you those system were “nearly desktop performance” was lying.
That said, this is the year.
The Tenstorrent Ascalon is supposed to be as fast as AMD Ryzen 5 (according to the guy who created that Architecture at AMD). It is aimed at servers initially but they say they will release their own silicon sometime in the first half of this year. Even if that is optimistic, sometime this year seems likely. They released the licensable IP last year.
https://m.youtube.com/watch?v=Y3rtN8TTGf4&pp=0gcJCTIBo7VqN5t...
> The Tenstorrent Ascalon is supposed to be as fast as AMD Ryzen 5
Don't set your self up for dissapointment. Ascalon is supposed to match Zen5 performance per clock, but at 2.5GHz, so will still be at a minimum 2x slower.
Additionally, the announces Ascalon devboard is supposed to be on an older node and have an ever lower frequency due to that. (the 2.5GHz were on SF4X, the devboard may be on something like 12nm)
You are right to be cautious.
Ryzen 5 is not Zen 5. So I am not predicting Zen 5 level performance for Ascalon.
I am expecting Zen 3 level performance which is to say about as fast as laptops from 2017 to 2020 or so. That is better than what I am typing on now.
So, not crushing Apple Silicon just yet but "usable" for the first time. Instead of "there are no RISC-V chips as fast as a Raspberry Pi", it will be "Intel is still faster". It may not even be that ARM is faster anymore. It will be more of a chip by chip comparison. At least people will have to admit that it is a race.
I am not looking for RISC-V to be "best in the world" in 2026. Rather, I want to stop hearing that it will never get there. After Ascalon, you will not be able to make the blanket statement that RISC-V is not good enough. It will be good enough in some markets and not in others. It will have a seat at the table.
And I want to be able to use RISC-V. Ascalon bring RISC-V into "good enough for me" territory.
And RISC-V will only get better. It is getting better faster than other chips are. My thesis is that this will continue (though that is certainly a bold prediction).
Even just looking at Tenstorrent, Babylon is not far behind Ascalon. And there is SciFive. And there is Andes. And there is SpaceMIT. And there is Alibaba. And there is Qualcomm. And there are companies I do not know about yet. And there are nation-states. There is a pretty big tidal wave headed for ARM (and maybe even AMD/Intel).
First they laugh at you. And then you win.