Intel Xeon E5 2620 v2 's Advantages
Higher base frequency (2.1GHz vs 1.9GHz)
Lower TDP (80W vs 250W)
Xeon 6766E 's Advantages
Released 10 years and 9 months late
Higher specification of memory (6400 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (108MB vs 15MB)
More modern manufacturing process (5nm vs 22nm)