AMD EPYC 9965 's Advantages
Released 5 years and 2 months late
Higher specification of memory (6000 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (384MB vs 256MB)
More modern manufacturing process (3nm vs 7nm)
AMD EPYC 7642 's Advantages
Higher base frequency (2.4GHz vs 2.25GHz)
Lower TDP (225W vs 500W)