AMD EPYC 7643 's Advantages
Released 8 years and 10 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 3)
Higher base frequency (2.3GHz vs 2GHz)
Larger L3 cache size (256MB vs 10MB)
More modern manufacturing process (7nm vs 32nm)
Intel Xeon E5 4603 's Advantages
Lower TDP (95W vs 225W)