Intel Xeon E5 2630 v2 's Advantages
Released 1 years and 6 months late
Higher base frequency (2.6GHz vs 2.2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 95W)
Intel Xeon E5 2660 's Advantages
Larger L3 cache size (20MB vs 15MB)