Intel Xeon E5 2637 v2 's Advantages
Higher base frequency (3.5GHz vs 2.1GHz)
Intel Xeon E5 4650 v3 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (30MB vs 10MB)
Lower TDP (105W vs 130W)