Intel Xeon E5 2658 v3 's Advantages
Larger L3 cache size (30MB vs 12MB)
Xeon E 2186M 's Advantages
Released 3 years and 7 months late
Higher specification of memory (DDR4-2666 vs DDR4-2133)
Higher base frequency (2.9GHz vs 2.2GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 105W)