Opteron 6168 's Advantages
Released 3 years and 7 months late
Higher specification of memory (3 vs 2)
Newer PCIe version (2 vs 1)
More modern manufacturing process (45nm vs 90nm)
Opteron 2218 (F2) 's Advantages
Higher base frequency (2.6GHz vs 1.9GHz)
Lower TDP (95W vs 115W)