AMD EPYC 7251 's Advantages
Higher base frequency (2.1GHz vs 2GHz)
Lower TDP (120W vs 225W)
AMD EPYC 7713 's Advantages
Released 3 years and 9 months late
Higher specification of memory (3200 vs 2400)
Newer PCIe version (4 vs 3)
Larger L3 cache size (256MB vs 32MB)
More modern manufacturing process (7nm vs 14nm)