Intel Xeon E5 2678 v3 's Advantages
Released 4 years and 11 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (2.5GHz vs 2.266GHz)
Larger L3 cache size (30MB vs 4MB)
More modern manufacturing process (22nm vs 45nm)
Xeon EC5539 's Advantages
Lower TDP (65W vs 120W)