We really like the new FireStorm software that Zotac is using for their 20-series cards. The main app page shows you information on your fans, GPU clocks, and temperature.
If you click on the Manual tab you are actually able to change these values to overclock the card or speed up the fans etc. If you click on the advanced tab on the left it brings up a fan speed graph, which you can adjust to fit your needs.
There is an OC Scanner button that will try and perform and auto-overclock on the card. We ran it and got a 60 MHz boost.