Xeon E 2186M 's Advantages
Higher base frequency (2.9GHz vs 2.8GHz)
Lower TDP (45W vs 105W)
Intel Xeon Silver 4309Y 's Advantages
Released 3 years late
Higher specification of memory (2667 vs 2666)
Newer PCIe version (4 vs 3)
More modern manufacturing process (10nm vs 14nm)