Intel Xeon E5 2620 v2 's Advantages
Released 2 years and 5 months late
Higher base frequency (2.1GHz vs 2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 130W)
Intel Xeon E7 8850 's Advantages
Larger L3 cache size (30MB vs 15MB)