Hello,
I've been trying to figure out how to get to a higher overclock than 840 for my video card but have so far been unsuccessful.
First, I load a root terminal and enter "aticonfig --od-enable". Then, I load AMDOverdriveCtrl and make some modifications to the best levels allowable on the software. I then save the profile and then open the profile with leafpad. I modify the profile to have suitable clock settings for the GPU and save it. When I open another root terminal and attempt to load the profile 'AMDOverdriveCtrl -i (insert number of a gpu here) -a (insert chosen profile name here).ovdr' I get an error. "Overdrive Error Could not apply overdrive settings." I have the powertune settings at 20%.
Basically, I don't seem to be able to go above the allowable defaults. I've done plenty of reading and finding this "aticonfig --od-enable" excited me, thinking that was the solution to my problem. I thought I was so clever when I modified the profile with leafpad, haha.