Intel Xeon E3 1225 's Advantages
Higher base frequency (3.1GHz vs 1.9GHz)
Intel Xeon E5 2609 v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (1600 vs 3)
Larger L3 cache size (15MB vs 6MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (85W vs 95W)