Opteron 6278 's Advantages
Higher base frequency (2.4GHz vs 1.8GHz)
Intel Xeon E5 2675 v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (40MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (110W vs 115W)