Intel Xeon E5 2450 v2 's Advantages
Released 2 years and 5 months late
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E3 1220 's Advantages
Higher base frequency (3.1GHz vs 2.5GHz)
Lower TDP (80W vs 95W)