Intel Xeon E5 2666 v3 's Advantages
Released 8 years and 3 months late
Higher specification of memory (2133 vs 667)
Newer PCIe version (3 vs 1)
Higher base frequency (2.9GHz vs 2.8GHz)
More modern manufacturing process (22nm vs 90nm)
Opteron 8220 SE (F2) 's Advantages
Lower TDP (120W vs 135W)