Opteron 6168 's Advantages
Released 2 years and 7 months late
Newer PCIe version (2 vs 1)
More modern manufacturing process (45nm vs 90nm)
Lower TDP (115W vs 120W)
Opteron 8224 SE 's Advantages
Higher specification of memory (667 vs 3)
Higher base frequency (3.2GHz vs 1.9GHz)