MSI Afterburner is an Overclocking utility that also allows you to alter your fan profiles and monitor your cards, which include heat, usage, clocks and fps, among other things. They also have tools for displaying that info on the screen while gaming, as well as logitech LCD screens for devices like the G13 or keyboards with LCD's.
I recommended MSI Afterburner, instead of Precision, because Afterburner works with all brands of cards, Nvidia and AMD alike. Precision will only work on EVGA cards. Trixx only works on Sapphire cards, and SmartDoctor only works on ASUS.