AMD EPYC 9645 's Advantages
Released 4 years and 6 months late
Higher specification of memory (6000 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (256MB vs 192MB)
More modern manufacturing process (3nm vs 7nm)
AMD EPYC 7F72 's Advantages
Higher base frequency (3.2GHz vs 2.3GHz)
Lower TDP (240W vs 320W)