AMD EPYC 7643 's Advantages
Released 7 years and 6 months late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (256MB vs 20MB)
Intel Xeon E5 2667 v2 's Advantages
Higher base frequency (3.3GHz vs 2.3GHz)
Lower TDP (130W vs 225W)