Xeon E 2186M 's Advantages
Released 4 years and 7 months late
Higher specification of memory (2666 vs 3)
Higher base frequency (2.9GHz vs 2.8GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 115W)
Intel Xeon E5 2680 v2 's Advantages
Larger L3 cache size (25MB vs 12MB)