Intel Xeon E5 2620 's Advantages
Lower TDP (95W vs 115W)
Intel Xeon E7 4830 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (30MB vs 15MB)
More modern manufacturing process (22nm vs 32nm)