here's one article:
seems the 65w offers same performance at stock. i don't think it mentions oc'ing tho. google it, you'll find something.
i don't think you made a mistake with the psu. modular cables (supposedly) do not hold up like the hard wired ones.
"nagasama no longer drinks tecate, or streaks out of the night for anything, and he has a fine wife so he has no use for your girlfriend...she is safe..."