I say forget about keeping the 1:1 ratio with the ram and fsb, its not gonna happen. The 680 isn't going to be able to handle that. Just link the FSB and Ram, and be done with it. If you're upset that you just bought some super expensive and fast ram, just manually adjust the timings to something much faster than what's on the box.
thanks for the thread.
i'm unsure what i'm going to do as far as oc'ing now. i guess run the 1066 at 800 and see if i can run 3.6ghz stable.