Intel Xeon E3 1220 v2 's Advantages
Higher base frequency (3.1GHz vs 1.9GHz)
Lower TDP (69W vs 250W)
Xeon 6766E 's Advantages
Released 12 years and 1 months late
Higher specification of memory (6400 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (108MB vs 8MB)
More modern manufacturing process (5nm vs 22nm)