Intel Xeon E5 2650 's Advantages
Released 2 years and 6 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Xeon X3440 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.533GHz vs 2GHz)