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Comment by penskymaterial

3 hours ago

Maybe someone can explain why their SSDs, when not soldered down, are a proprietary form factor and can't be replaced with a standard M.2 device?

I believe they have a special kind of SSD, where the controller is locked into the motherboard. This is serial locked in some form.

(Correct me if I’m wrong, but this is how I understand it)

  • It’s not actually serial locked, you can replace SSDs by desoldering and resoldering a NAND chip. But basically their SSD controller is integrated into the M-series chips (mostly because cheaper, less connectors to manufacture). But it’s a very specialized process

    • I think most consumers would happily pay a bit extra for these controllers if it meant that they could manually upgrade their SSDs. I can’t help but have the feeling that it’s also quite convenient for Apple that all this stuff is effectively non-replaceable / upgradable.

      I don’t think the benefits are the same as with their RAM being part of their SoC, as that gives them real speed improvements, right?

  • My understanding is that the controller is integrated into the SoC.

    You can actually replace the storage on Apple desktops but it’s a bit of a pain and isn’t as cheap as m.2 2280 drives.

    I don’t really know why Apple does this when their solution doesn’t seem to offer an obvious advantage. They aren’t faster than existing solutions or anything like that.

    • Vendor lock-in increases their profit margins. If people could purchase a 128GB Mac mini and install their own 2TB drives they wouldn't make as much money.

To gain the same effect as one that is soldered down, while giving themselves a simpler portfolio of assemblies and a cheaper FRU to swap in the event of failure.