Xeon E5 2650 v4 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2133 vs 1866)
Larger L3 cache size (30MB vs 10MB)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (105W vs 130W)
Intel Xeon E5 1620 v2 's Advantages
Higher base frequency (3.7GHz vs 2.2GHz)