AMD EPYC 9455 's Advantages
Released 6 years and 3 months late
Higher specification of memory (6000 vs 2666)
Newer PCIe version (5 vs 3)
Larger L3 cache size (192MB vs 12MB)
More modern manufacturing process (4nm vs 14nm)
Xeon E 2146G 's Advantages
Higher base frequency (3.5GHz vs 3.15GHz)
Lower TDP (80W vs 300W)