Xeon EC5509 's Advantages
Higher specification of memory (1066 vs 4)
Intel Xeon E3 1285 v3 's Advantages
Released 3 years and 4 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2GHz)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (84W vs 85W)