Intel Xeon E5 2620 v2 's Advantages
Higher base frequency (2.1GHz vs 1.8GHz)
Larger L3 cache size (15MB vs 6MB)
Intel Xeon E3 1258L v4 's Advantages
Released 1 years and 9 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 80W)