Intel Xeon E5 2637 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2133 vs 1600)
Higher base frequency (3.5GHz vs 2.6GHz)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 2689 's Advantages
Larger L3 cache size (20MB vs 15MB)
Lower TDP (115W vs 135W)