Intel Xeon E5 1620 v3 's Advantages
Higher specification of memory (2133 vs 3)
Higher base frequency (3.5GHz vs 1.8GHz)
Larger L3 cache size (10MB vs 6MB)
Intel Xeon E3 1258L v4 's Advantages
Released 9 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (47W vs 140W)