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by powercf 3215 days ago
> This problem only affects a minority of chips in the first place (likely a litho flaw in the cache section)

What are you basing this on? I've seen no good reporting on this* but the AMD Community segfault thread (https://community.amd.com/message/2796982) seems to suggest that almost all Ryzen CPUs manufactured before the end of June (which I assume is most of the current stock) are affected. Very few people load their Ryzens sufficiently to hit this bug, but a large number of those who attempt it seem to get the segfault.

* I would like to know the percentage of processors with the bug, percentage of review units with the bug (I would be very interested in this), and maybe some long-term testing of "bug free" processors etc.

1 comments

It may be ridiculous, but I'm not spending a million dollars on CPUs with information gleamed from a forum post.
It's not ridiculous, but there's pratically no more information about it. No major tech sites have covered it, beyond Phoronix. AMD haven't acknowledged it, beyond stating that "a performance marginality problem exclusive to certain workloads on Linux" exists, which is factually incorrect as it also seems to occur on other operating systems.

I'm not spending hundreds of euro on a processor without knowing something more concrete about this issue. If you budget is really ~million dollars, do you have additional information about this that you can share?

My ~$400 CPU budget went toward a Skylake i7 a couple of years ago, I'm afraid.