Intel Xeon E5 2686 v3 's Advantages
Released 4 years and 1 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (45MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (120W vs 130W)
Intel Xeon W3670 's Advantages
Higher base frequency (3.2GHz vs 2GHz)