Intel Xeon E5 2637 v3 's Advantages
Released 5 years and 1 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 3.333GHz)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Xeon W5590 's Advantages
Lower TDP (130W vs 135W)