Intel Xeon E5 2670 v2 's Advantages
Released 2 years and 5 months late
Larger L3 cache size (25MB vs 6MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1225 's Advantages
Higher base frequency (3.1GHz vs 2.5GHz)
Lower TDP (95W vs 115W)