AMD EPYC 7742 's Advantages
Larger L3 cache size (256MB vs 75MB)
More modern manufacturing process (7nm vs 10nm)
Lower TDP (225W vs 325W)
Xeon w7 3555 's Advantages
Released 5 years late
Higher specification of memory (4800 vs 3200)
Newer PCIe version (5 vs 4)
Higher base frequency (2.7GHz vs 2.25GHz)