Xeon E5540 's Advantages
Lower TDP (80W vs 280W)
AMD EPYC 9355 's Advantages
Released 15 years and 7 months late
Higher specification of memory (6000 vs 1066)
Newer PCIe version (5 vs 2)
Higher base frequency (3.55GHz vs 2.533GHz)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (4nm vs 45nm)