Zotac Nitro VGA Overclocking Controller
 

Zotac's Nitro is a clever little USB gadget that puts the overclocking power of your graphics card right at your finger tips. You can also monitor temperatures and adjust the fan speeds. The best is that all this can be done on the fly, without switching out of your game or benchmark.

http://www.techpowerup.com/reviews/Z..._OC_Controller