AMD EPYC 9555 's Advantages
Released 5 years and 10 months late
Higher specification of memory (6000 vs 4)
Higher base frequency (3.2GHz vs 2.7GHz)
Larger L3 cache size (256MB vs 38.5MB)
More modern manufacturing process (4nm vs 14nm)
Xeon Platinum 8280 's Advantages
Lower TDP (205W vs 360W)