AMD EPYC 7551 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (64MB vs 12MB)
More modern manufacturing process (14nm vs 45nm)
Opteron 6180 SE 's Advantages
Higher base frequency (2.5GHz vs 2GHz)
Lower TDP (140W vs 180W)