Xeon E 2186M 's Advantages
Higher base frequency (2.9GHz vs 2.4GHz)
Lower TDP (45W vs 185W)
Intel Xeon Gold 6312U 's Advantages
Released 3 years late
Higher specification of memory (3200 vs 2666)
Newer PCIe version (4 vs 3)
Larger L3 cache size (36MB vs 12MB)
More modern manufacturing process (10nm vs 14nm)