Intel Xeon E5 1620 v2 's Advantages
Higher base frequency (3.7GHz vs 2.3GHz)
Intel Xeon E5 2695 v3 's Advantages
Released 1 years late
Higher specification of memory (DDR4-2133 vs DDR3-1866)
Larger L3 cache size (35MB vs 10MB)
Lower TDP (120W vs 130W)