AMD EPYC 9554 's Advantages
Released 12 years and 9 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3.1GHz vs 2.266GHz)
Larger L3 cache size (256MB vs 4MB)
More modern manufacturing process (5nm vs 45nm)
Xeon EC5539 's Advantages
Lower TDP (65W vs 360W)