Opteron 8222 's Advantages
Higher base frequency (3GHz vs 2GHz)
Lower TDP (95W vs 115W)
Intel Xeon E7 4809 v3 's Advantages
Released 7 years and 10 months late
Higher specification of memory (1866 vs 667)
Newer PCIe version (3 vs 1)
More modern manufacturing process (22nm vs 90nm)