Intel Xeon E5 2660 's Advantages
Released 1 years and 10 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Xeon X3480 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (3.066GHz vs 2.2GHz)