Opteron 2218 (F2) 's Advantages
Lower TDP (95W vs 115W)
Opteron 6308 's Advantages
Released 6 years and 3 months late
Higher specification of memory (1866 vs 2)
Newer PCIe version (2 vs 1)
Higher base frequency (3.5GHz vs 2.6GHz)
More modern manufacturing process (32nm vs 90nm)