Opteron 6278 's Advantages
Released 5 years and 9 months late
Newer PCIe version (2 vs 1)
More modern manufacturing process (32nm vs 90nm)
Opteron 8218 (F2) 's Advantages
Higher specification of memory (667 vs 3)
Higher base frequency (2.6GHz vs 2.4GHz)
Lower TDP (95W vs 115W)