Intel Xeon E3 1225 's Advantages
Lower TDP (95W vs 140W)
Intel Xeon W 2145 's Advantages
Released 6 years and 4 months late
Higher specification of memory (2666 vs 3)
Higher base frequency (3.7GHz vs 3.1GHz)
Larger L3 cache size (11MB vs 6MB)
More modern manufacturing process (14nm vs 32nm)