Intel Xeon E5 1620 v3 's Advantages
Higher specification of memory (2133 vs 4)
Larger L3 cache size (10MB vs 8MB)
Intel Xeon E3 1285 v6 's Advantages
Released 2 years and 11 months late
Higher base frequency (4.1GHz vs 3.5GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (79W vs 140W)