Opteron 6278 's Advantages
Higher base frequency (2.4GHz vs 2.1GHz)
Lower TDP (115W vs 140W)
Intel Xeon E7 8870 v3 's Advantages
Released 3 years and 1 months late
Higher specification of memory (1866 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (45MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)