Intel Xeon E5 2450 v2 's Advantages
Released 4 years and 6 months late
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Xeon E5540 's Advantages
Higher specification of memory (1066 vs 3)
Higher base frequency (2.533GHz vs 2.5GHz)
Lower TDP (80W vs 95W)