Opteron 6276 's Advantages
Lower TDP (115W vs 145W)
Intel Xeon E5 2699 v3 's Advantages
Released 2 years and 10 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (45MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)