Xeon E 2186M 's Advantages
Released 8 years and 1 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.9GHz vs 2.666GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 95W)