Xeon W 1390P 's Advantages
Released 9 years late
Higher specification of memory (3200 vs 3)
Higher base frequency (3.5GHz vs 1.8GHz)
Larger L3 cache size (16MB vs 10MB)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon E5 2403 's Advantages
Lower TDP (80W vs 125W)