Intel Xeon E5 2669 v3 's Advantages
Released 7 years and 2 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Xeon E5440 's Advantages
Higher base frequency (2.833GHz vs 2.3GHz)
Lower TDP (80W vs 120W)