Slowdown/overheating are not inherit to AVX512, they are specific to older implementations. And no the GPU is not a replacement, the latency difference between GPU and AVX512 is off the charts.
Okay, there's a use case I didn't know about. Do you know any SIMD projects that require the lower latency?
I'm glad to hear some newer AVX512 implementations are better. I haven't used an Intel one for years, but I have used the current-gen Ryzen version. Unfortunately it's still suffering the same problems-last time I stress-tested it my CPU hit 100C and some absurd power number before I was too scared to continue. Granted, that was with Prime95, which I believe is close to peak utilization.
