Intel Xeon E5 2620 v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (1866 vs 1333)
Higher base frequency (2.4GHz vs 2GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (85W vs 105W)
Xeon E7 4820 's Advantages
Larger L3 cache size (18MB vs 15MB)