AMD EPYC 7451 's Advantages
Released 4 years and 7 months late
Higher specification of memory (2666 vs 1866)
Newer PCIe version (3 vs 2)
Larger L3 cache size (64MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Opteron 6320 's Advantages
Higher base frequency (2.8GHz vs 2.3GHz)
Lower TDP (115W vs 180W)