To start my pc set up is a e4400 2.2Ghz overclocked to 3.0Ghz, 4GB of ocz ram, and of course the 9600 GSO 512Mb, xfx 680i LT, and ubuntu 14.04 by all means I know this machine is out of date old and dusty but I just want to thinker with overclocking before my new one is finished just to have some more knowledge of safe ways to go about it. Where I really want to get some more is out of the video card what settings am I looking to change for that?