Opteron 1381 's Advantages
Lower TDP (115W vs 170W)
AMD EPYC 4564P 's Advantages
Released 14 years and 11 months late
Higher specification of memory (5200 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (4.5GHz vs 2.5GHz)
Larger L3 cache size (64MB vs 6MB)
More modern manufacturing process (5nm vs 45nm)