Xeon E 2456 's Advantages
Released 2 years and 9 months late
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Newer PCIe version (5 vs 4)
Higher base frequency (3.3GHz vs 2.65GHz)
Lower TDP (80W vs 180W)
AMD EPYC 7413 's Advantages
Larger L3 cache size (128MB vs 18MB)