AMD EPYC 7261 's Advantages
Lower TDP (170W vs 325W)
Xeon w7 3555 's Advantages
Released 6 years and 2 months late
Higher specification of memory (4800 vs 2666)
Newer PCIe version (5 vs 3)
Higher base frequency (2.7GHz vs 2.5GHz)
Larger L3 cache size (75MB vs 32MB)
More modern manufacturing process (10nm vs 14nm)