Intel Xeon E5 2630 v2 's Advantages
Released 1 years and 6 months late
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 135W)
Intel Xeon E5 2690 's Advantages
Higher base frequency (2.9GHz vs 2.6GHz)
Larger L3 cache size (20MB vs 15MB)