Xeon EC5509 's Advantages
Larger L3 cache size (8MB vs 6MB)
Lower TDP (85W vs 95W)
Intel Xeon E3 1285 v4 's Advantages
Released 5 years and 4 months late
Higher specification of memory (1866 vs 1066)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2GHz)
More modern manufacturing process (14nm vs 45nm)