AMD’s Zen 5 core is groundbreaking with its full-width AVX-512 datapaths and 512-bit vector execution units, allowing for high performance without fixed clock speed offsets. In contrast, Intel’s Skylake-X faced teething troubles with AVX-512 power demands. Zen 5 excels in handling AVX-512 workloads at 5.7 GHz, displaying no transition periods or clock speed drops, unlike Skylake-X. The core’s fine-grained IPC throttling mechanism adjusts clock speeds based on workload stress, preventing repeated transitions. Zen 5’s FPU efficiently manages heavy AVX-512 sequences through varying behaviors among cores. Overall, Zen 5’s AVX-512 clocking strategy minimizes transition periods and maintains high performance.
https://chipsandcheese.com/p/zen-5s-avx-512-frequency-behavior