Xeon E 2186M 's Advantages
Released 7 years late
Higher specification of memory (2666 vs 3)
Larger L3 cache size (12MB vs 8MB)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 80W)
Intel Xeon E3 1270 's Advantages
Higher base frequency (3.4GHz vs 2.9GHz)