Intel Xeon E5 1620 v2 's Advantages
Higher base frequency (3.7GHz vs 2.1GHz)
Lower TDP (130W vs 140W)
Intel Xeon E7 8870 v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (1866 vs 1866)
Larger L3 cache size (45MB vs 10MB)