Xeon E 2186M 's Advantages
Released 5 years and 11 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Higher base frequency (2.9GHz vs 2.6GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (45W vs 115W)
Intel Xeon E5 4650L 's Advantages
Larger L3 cache size (20MB vs 12MB)