Intel Xeon E5 2666 v3 's Advantages
Higher base frequency (2.9GHz vs 2.75GHz)
Lower TDP (135W vs 225W)
AMD EPYC 7453 's Advantages
Released 6 years and 4 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Larger L3 cache size (64MB vs 25MB)
More modern manufacturing process (7nm vs 22nm)