Intel Xeon E5 2403 's Advantages
Lower TDP (80W vs 325W)
Xeon w7 3555 's Advantages
Released 12 years and 3 months late
Higher specification of memory (4800 vs 3)
Higher base frequency (2.7GHz vs 1.8GHz)
Larger L3 cache size (75MB vs 10MB)
More modern manufacturing process (10nm vs 32nm)