Intel Xeon E5 2685 v3 's Advantages
Released 2 years and 6 months late
Larger L3 cache size (30MB vs 5MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 2637 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (3GHz vs 2.6GHz)
Lower TDP (80W vs 120W)