Opteron 6276 's Advantages
Lower TDP (115W vs 170W)
AMD EPYC 7371 's Advantages
Released 7 years late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.1GHz vs 2.3GHz)
Larger L3 cache size (64MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)