Intel Xeon E3 1280 v5 's Advantages
Released 6 years and 1 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.7GHz vs 2.533GHz)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (80W vs 95W)
Xeon X3440 's Advantages
Higher specification of memory (1333 vs 4)