Intel Xeon E5 2637 v2 's Advantages
Higher base frequency (3.5GHz vs 3GHz)
Larger L3 cache size (10MB vs 6MB)
Intel Xeon E3 1270L v4 's Advantages
Released 1 years and 9 months late
Higher specification of memory (DDR3-1866 vs DDR3)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 130W)