Intel Xeon E5 2670 's Advantages
Released 4 years and 4 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (32nm vs 45nm)
Xeon E5472 's Advantages
Higher specification of memory (3 vs 3)
Higher base frequency (3GHz vs 2.6GHz)
Lower TDP (80W vs 115W)