AMD EPYC 9554 's Advantages
Released 13 years and 8 months late
Higher specification of memory (4800 vs 1066)
Newer PCIe version (5 vs 2)
Higher base frequency (3.1GHz vs 2.533GHz)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (5nm vs 45nm)
Xeon E5540 's Advantages
Lower TDP (80W vs 360W)