Xeon X3440 's Advantages
Higher specification of memory (1333 vs 4)
Intel Xeon E3 1285 v6 's Advantages
Released 7 years and 11 months late
Newer PCIe version (3 vs 2)
Higher base frequency (4.1GHz vs 2.533GHz)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (79W vs 95W)