Intel Xeon E5 2620 v2 's Advantages
Lower TDP (80W vs 150W)
Intel Xeon E7 8880 v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.3GHz vs 2.1GHz)
Larger L3 cache size (45MB vs 15MB)