4 ms·

Here is an experience report on how AVX-512 instructions impact CPU performance https://blog.cloudflare.com/on-the-dangers-of-intels-frequency-scaling/ https://

• paulmd 9y ago
  Note that Skylake-SP and Xeon-W/i7/i9s behave very differently in this regard. On Skylake-SP (eg Xeon Silvers like they're using) it's over 50% clockrate reduction when AVX-512 is in the pipe, on Xeon-W and the HEDT chips it's more like 10-20%. https://twitter.com/InstLatX64/status/934093081514831872 https://twitter.com/InstLatX64/status/934093081514831872
  • floatboth 9y ago
    On HEDT (and mainstream desktop) you can actually adjust AVX offset manually. With 0 offset and 5GHz clock, you can consume 500W (in Prime95 AVX) :D