Intel Xeon E3 1245 's Advantages
Higher base frequency (3.3GHz vs 1.8GHz)
Intel Xeon E5 2603 v2 's Advantages
Released 2 years and 5 months late
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 95W)