Intel Xeon E3 1220L v3 's Advantages
Released 4 years and 6 months late
Higher specification of memory (1600 vs 1066)
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (13W vs 80W)
Xeon E5540 's Advantages
Higher base frequency (2.533GHz vs 1.1GHz)
Larger L3 cache size (8MB vs 4MB)