Intel Xeon E5 2630 v2 's Advantages
Released 3 years and 6 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.6GHz vs 2.266GHz)
Larger L3 cache size (15MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon L5640 's Advantages
Lower TDP (60W vs 80W)