Intel Xeon E5 2686 v3 's Advantages
Lower TDP (120W vs 250W)
Xeon w7 2575X 's Advantages
Released 9 years and 11 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
Higher base frequency (3GHz vs 2GHz)
More modern manufacturing process (10nm vs 22nm)