Intel Xeon E5 1607 v2 's Advantages
Released 3 years and 7 months late
Higher specification of memory (1600 vs 1066)
Newer PCIe version (3 vs 2)
Higher base frequency (3GHz vs 2GHz)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Xeon EC5509 's Advantages
Lower TDP (85W vs 130W)