Intel Xeon E3 1220 v2 's Advantages
Released 2 years and 2 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.1GHz vs 2GHz)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (69W vs 105W)
Xeon E7540 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (18MB vs 8MB)