AVX-512 Performance Comparison: AMD Genoa vs. Intel Sapphire Rapids & Ice Lake

With last week's launch of Intel's 4th Gen Xeon Scalable Sapphire Rapids server processors, Intel heavily talked up the shiny new accelerators and the big performance potential of AMX, but not really showcased and only heard through the grapevine was the improved AVX-512 implementation found with these new processors. With Sapphire Rapids there is reduced penalties from engaging AVX-512 -- and for some AVX-512 instructions, no longer any measurable impact -- compared to prior generation Xeon processors. In this article is a look at the performance for a wide variety of workloads with AVX-512 on/off not just for Sapphire Rapids but also for prior generation Ice Lake as well as AMD's new EPYC 4th Gen "Genoa" processors where they have introduced AVX-512 for the first time.