AMD EPYC 7642 's Advantages
Lower TDP (225W vs 360W)
AMD EPYC 9654P 's Advantages
Released 3 years and 3 months late
Higher specification of memory (4800 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (384MB vs 256MB)
More modern manufacturing process (5nm vs 7nm)