Intel Xeon E5 2686 v3 's Advantages
Lower TDP (120W vs 225W)
Intel Xeon w7 2495X 's Advantages
Released 8 years and 5 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
Higher base frequency (2.5GHz vs 2GHz)
More modern manufacturing process (10nm vs 22nm)