AMD EPYC 9645 's Advantages
Released 3 years and 7 months late
Higher specification of memory (6000 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (256MB vs 128MB)
More modern manufacturing process (3nm vs 7nm)
AMD EPYC 7413 's Advantages
Higher base frequency (2.65GHz vs 2.3GHz)
Lower TDP (180W vs 320W)