Opteron 8222 's Advantages
Lower TDP (95W vs 210W)
Xeon w7 2555X 's Advantages
Released 17 years late
Higher specification of memory (4800 vs 667)
Newer PCIe version (5 vs 1)
Higher base frequency (3.3GHz vs 3GHz)
More modern manufacturing process (10nm vs 90nm)