Intel Xeon E3 1220 's Advantages
Released 1 years and 7 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.1GHz vs 2.4GHz)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (80W vs 95W)
Xeon X3430 's Advantages
Higher specification of memory (1333 vs 3)