Intel Xeon E5 2685 v3 's Advantages
Released 4 years and 7 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (2.6GHz vs 2.533GHz)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (22nm vs 45nm)
Xeon EC5549 's Advantages
Lower TDP (85W vs 120W)