Xeon E7520 's Advantages
Lower TDP (95W vs 280W)
AMD EPYC 9355 's Advantages
Released 14 years and 7 months late
Higher specification of memory (6000 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3.55GHz vs 1.866GHz)
Larger L3 cache size (256MB vs 18MB)
More modern manufacturing process (4nm vs 45nm)