Intel Xeon E5 2420 v2 's Advantages
Released 2 years and 5 months late
Higher base frequency (2.2GHz vs 2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (80W vs 130W)
Xeon E7 4850 's Advantages
Higher specification of memory (1333 vs 3)
Larger L3 cache size (24MB vs 15MB)