AMD EPYC 7251 's Advantages
Lower TDP (120W vs 180W)
AMD EPYC 7413 's Advantages
Released 3 years and 9 months late
Higher specification of memory (3200 vs 2400)
Newer PCIe version (4 vs 3)
Higher base frequency (2.65GHz vs 2.1GHz)
Larger L3 cache size (128MB vs 32MB)
More modern manufacturing process (7nm vs 14nm)