Intel Xeon E5 1603 v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (1866 vs 3)
Larger L3 cache size (10MB vs 6MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1225 's Advantages
Higher base frequency (3.1GHz vs 2.8GHz)
Lower TDP (95W vs 140W)