Intel Xeon E3 1285 v4 's Advantages
Released 5 years and 4 months late
Higher specification of memory (1866 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.266GHz)
Larger L3 cache size (6MB vs 4MB)
More modern manufacturing process (14nm vs 45nm)
Xeon EC5539 's Advantages
Lower TDP (65W vs 95W)