Intel Xeon E5 2620 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (1866 vs 3)
Higher base frequency (2.4GHz vs 2.1GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (85W vs 95W)
Intel Xeon E5 2658 's Advantages
Larger L3 cache size (20MB vs 15MB)