Thank you you heaps for taking the time to do that! You are totally right. Now if the 'disable AMD overdrive' dude is correct, I just have to figure out how to do this under Linux and maybe my gf and my power company will hate me a little less.
Lots of Linux overclocking info here:
http://www.linuxcoin.co.uk/wiki/index.php/OverclockingI've got two 6970's and was able to get their mem clocks down to 755. Any lower and it would shoot up to max when under load.