AMD EPYC 7551P 's Advantages
Released 7 years and 3 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (64MB vs 12MB)
Intel Xeon E5645 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Lower TDP (80W vs 180W)