Intel Xeon E3 1285 v6 's Advantages
Released 7 years and 6 months late
Newer PCIe version (3 vs 2)
Higher base frequency (4.1GHz vs 2GHz)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (79W vs 85W)
Xeon EC5509 's Advantages
Higher specification of memory (1066 vs 4)