Xeon E 2186G 's Advantages
Released 8 years and 2 months late
Higher specification of memory (2666 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.8GHz vs 1.866GHz)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon L5609 's Advantages
Lower TDP (40W vs 95W)