Xeon E 2186M 's Advantages
Released 10 years and 8 months late
Higher specification of memory (2666 vs 667)
Newer PCIe version (3 vs 1)
More modern manufacturing process (14nm vs 90nm)
Lower TDP (45W vs 95W)
Opteron 8222 's Advantages
Higher base frequency (3GHz vs 2.9GHz)