Intel Xeon E3 1280 v2 's Advantages
Lower TDP (69W vs 79W)
Intel Xeon E3 1285 v6 's Advantages
Released 5 years and 3 months late
Higher specification of memory (4 vs 3)
Higher base frequency (4.1GHz vs 3.6GHz)
More modern manufacturing process (14nm vs 22nm)