AMD EPYC 7251 's Advantages
Lower TDP (120W vs 360W)
AMD EPYC 9754 's Advantages
Released 6 years late
Higher specification of memory (4800 vs 2400)
Newer PCIe version (5 vs 3)
Higher base frequency (2.25GHz vs 2.1GHz)
Larger L3 cache size (256MB vs 32MB)
More modern manufacturing process (5nm vs 14nm)