thats what i'm thinking ^^^ i wouldn't be surprised that the clock speed stayed the same when you drop VOLTAGE. unless you mean it was stable at that voltage. seriously though if you are that confused why in **** are you overclocking a $1000+ cpu like that. did you even increment the voltage or did you just guess and up it like that.
edit: burned ati i don't know how long you'll last with that avatar before you get told to ditch it.