Xeon E5472 's Advantages
Higher base frequency (3GHz vs 2.3GHz)
Lower TDP (80W vs 105W)
Intel Xeon E5 2650 v3 's Advantages
Released 6 years and 10 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)