Intel Xeon E5 2603 v2 's Advantages
Released 3 years and 6 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon L5630 's Advantages
Higher base frequency (2.133GHz vs 1.8GHz)
Larger L3 cache size (12MB vs 10MB)
Lower TDP (40W vs 80W)