AMD EPYC 7401 's Advantages
Lower TDP (170W vs 280W)
AMD EPYC 9355P 's Advantages
Released 7 years and 4 months late
Higher specification of memory (6000 vs 2666)
Newer PCIe version (5 vs 3)
Higher base frequency (3.55GHz vs 2GHz)
Larger L3 cache size (256MB vs 64MB)
More modern manufacturing process (4nm vs 14nm)