Over-Clocking an NVIDIA GPU on Linux

I’ve been playing the World of Warcraft on Fedora 10 for about two months now and I must say, I’m impressed.  The performance is close to Windows XP.  I dropped about 20%-30% of my frame rate in the process, but I don’t need to waste an entire(otherwise valuable) computer.  So it occurred to me that I might be able to squeeze a little more juice out of my Nvidia Geforce 7950 GT graphics card.

Goal of this Post:

– Enable overclocking for Nvidia graphics cards

It took me a bunch of tries to properly set this up.  Nvidia does not document this process; but with enough googling I pieced together the clues to make it happen.  First I want to mention that enabling ‘over clocking’ voids the warranty on all Nvidia cards,  So please be careful.  Locate your ‘xorg.conf’ file and open it with your favorite text editor.  In most cases this will be ‘/etc/X11/xorg.conf’.  Under the device section add:

Option         “coolbits” “1”