Xeon E7 8837 's Advantages
Higher base frequency (2.667GHz vs 2.6GHz)
Lower TDP (130W vs 135W)
Intel Xeon E5 2690 v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (2133 vs 1333)
Larger L3 cache size (30MB vs 24MB)
More modern manufacturing process (22nm vs 32nm)