Intel Xeon E5 2620 v2 's Advantages
Released 4 years late
Newer PCIe version (3 vs 2)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (80W vs 95W)
Xeon X3450 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.667GHz vs 2.1GHz)