Intel Xeon E3 1280 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 (82W vs 85W)
Xeon EC5509 's Advantages
Higher specification of memory (1066 vs 4)