AMD EPYC 7643P 's Advantages
Released 11 years and 4 months late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 3)
Higher base frequency (2.3GHz vs 2GHz)
Larger L3 cache size (256MB vs 10MB)
Intel Xeon E5 4603 's Advantages
Lower TDP (95W vs 225W)