Intel Xeon E5 2603 v2 's Advantages
Released 3 years and 6 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (80W vs 130W)
Intel Xeon W3530 's Advantages
Higher base frequency (2.8GHz vs 1.8GHz)