Intel Xeon E5 2403 's Advantages
Lower TDP (80W vs 120W)
Intel Xeon w3 2423 's Advantages
Released 10 years and 9 months late
Higher specification of memory (4400 vs 3)
Higher base frequency (2.1GHz vs 1.8GHz)
Larger L3 cache size (15MB vs 10MB)
More modern manufacturing process (10nm vs 32nm)