Intel Xeon E7 4850 v3 '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 (2.2GHz vs 2GHz)
Larger L3 cache size (35MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Xeon EC5509 's Advantages
Lower TDP (85W vs 115W)