Xeon X3440 's Advantages
Released 2 years and 1 months late
Higher specification of memory (1333 vs 2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (45nm vs 90nm)
Lower TDP (95W vs 119W)
Opteron 2224 SE 's Advantages
Higher base frequency (3.2GHz vs 2.533GHz)