Intel Xeon E5 2450 v2 's Advantages
Higher base frequency (2.5GHz vs 2.3GHz)
Lower TDP (95W vs 215W)
Xeon 6556P B 's Advantages
Released 11 years and 5 months late
Higher specification of memory (6400 vs 3)
Larger L3 cache size (144MB vs 20MB)
More modern manufacturing process (5nm vs 22nm)