Opteron 6276 's Advantages
Lower TDP (115W vs 120W)
Intel Xeon E5 2669 v3 's Advantages
Released 3 years and 2 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)