AMD EPYC 7551 's Advantages
Released 7 years and 3 months late
Higher specification of memory (2666 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (64MB vs 12MB)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon X5677 's Advantages
Higher base frequency (3.466GHz vs 2GHz)
Lower TDP (130W vs 180W)