AMD EPYC 7742 's Advantages
Higher base frequency (2.25GHz vs 1.8GHz)
Larger L3 cache size (256MB vs 96MB)
Xeon 6756E 's Advantages
Released 4 years and 10 months late
Higher specification of memory (6400 vs 3200)
Newer PCIe version (5 vs 4)
More modern manufacturing process (5nm vs 7nm)