Xeon EC5509 's Advantages
Higher base frequency (2GHz vs 1.8GHz)
Lower TDP (85W vs 110W)
Intel Xeon E5 2675 v3 's Advantages
Released 4 years and 7 months late
Higher specification of memory (2133 vs 1066)
Newer PCIe version (3 vs 2)
Larger L3 cache size (40MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)