Intel Xeon E3 1270 's Advantages
Released 11 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.4GHz vs 3.066GHz)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (80W vs 95W)
Xeon X3480 's Advantages
Higher specification of memory (1333 vs 3)