ATTTols Which is the utility and function to perform overlock on graphics card (card), ATI and NVIDIA to work with the powerful on Windows 2000/XP/2003/Vista.
Here is an excellent features owned ATITools:
a. Finding maximum core and overclockmemory by rendering into a Direct3D display and scanning the output for visual artifacts
b. Monitor the temperature and fan speed control (for some cards)
c. Delete / remove catalyst overclocking lock for 9000/9200/9550/9600 series.