Intel Xeon E5 2670 v2 's Advantages
Released 5 years and 10 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Xeon E5440 's Advantages
Higher specification of memory (3 vs 3)
Higher base frequency (2.833GHz vs 2.5GHz)
Lower TDP (80W vs 115W)