Intel Xeon E3 1275 v2 's Advantages
Released 5 years and 3 months late
Newer PCIe version (3 vs 1)
Higher base frequency (3.5GHz vs 2.8GHz)
More modern manufacturing process (22nm vs 90nm)
Lower TDP (77W vs 95W)
Opteron 8220 's Advantages
Higher specification of memory (667 vs 3)