Opteron 2222 's Advantages
Lower TDP (95W vs 115W)
Opteron 6308 's Advantages
Released 5 years and 3 months late
Higher specification of memory (1866 vs 2)
Newer PCIe version (2 vs 1)
Higher base frequency (3.5GHz vs 3GHz)
More modern manufacturing process (32nm vs 90nm)