Intel Xeon E5 1620 v2 's Advantages
Higher base frequency (3.7GHz vs 3.4GHz)
Larger L3 cache size (10MB vs 6MB)
Intel Xeon E3 1285L v4 's Advantages
Released 1 years and 9 months late
More modern manufacturing process (14nm vs 22nm)
Lower TDP (65W vs 130W)