[jolan]

I see similar behavior with a 105W 3950X when running prime95. I haven't experienced instability otherwise over the 2 months I've had this build running.

Google's stressapptest runs fine for long durations, building a kernel with make -j32 succeeds (and can boot it), every parallelized archiver like 7z,pbzip2,pigz,xz is ok, and even gaming on a Windows VM using 8c/16t + GPU passthrough works well.

This is my first Ryzen system so I chalked it up to a possible carry over of DDR4 issues from earlier generations. I didn't investigate further since the 3950x had just been released and I couldn't find any other reports of prime95-only instability until now. And just to reiterate, it is perfectly stable otherwise.

Heavy AVX2 workload breaking things fits better so will have to try to collect more data.

[d1zzy]

I'm still eyeing the 3950x as my next upgrade so I hope this gets resolved through a BIOS update or something. What motherboard are you using for it? (I'm assuming stock settings, no overclock or PBO, AMD doesn't consider PBO to be stock)

[jolan]

I picked the ASRock X570 Taichi since I needed 3 PCIe slots and it was on sale for ~$260. Very happy with it and yeah I'm not overclocking or using any of the quasi-overclock settings either.