Intel Xeon E5 2403 's Advantages
Lower TDP (80W vs 140W)
Intel Xeon W 2145 's Advantages
Released 5 years and 3 months late
Higher specification of memory (2666 vs 3)
Higher base frequency (3.7GHz vs 1.8GHz)
Larger L3 cache size (11MB vs 10MB)
More modern manufacturing process (14nm vs 32nm)