Intel Xeon E5 2643 's Advantages
Higher base frequency (3.3GHz vs 3.15GHz)
Lower TDP (130W vs 300W)
AMD EPYC 9455P 's Advantages
Released 12 years and 7 months late
Higher specification of memory (6000 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (192MB vs 10MB)
More modern manufacturing process (4nm vs 32nm)