AMD EPYC 7642 's Advantages
Released 10 years late
Higher specification of memory (3200 vs 1333)
Newer PCIe version (4 vs 2)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (7nm vs 45nm)
Xeon W5590 's Advantages
Higher base frequency (3.333GHz vs 2.4GHz)
Lower TDP (130W vs 225W)