ATI Tray Tools is a free utility that runs in the system tray and provides easy right-click access to all of your ATI video card's crucial settings. You can change anisotropic filtering + antialiasing levels in Direct3D and OpenGL, adjust image quality, turn on/off special driver features, or simply just fool around with clock settings (core and memory speeds). It uses minimal system resources and isn't intrusive.

1.2.6.940
[F] Fixed bug when manual fan control can not be applied[*] Updated some translation files
[F] Fixed Old I2C Method to be compatible with X1xxx boards in memory voltage control procedure
[+] Added ability to change how ATT will react on "ATI HotKey poller" service. (in General options)[*] Updated Overdrive control procedure. Now you can set any available clocks for OverDrive even beyond the Catalyst limits!
And change GPU Voltage too.
[+] Added option to apply OverDrive settings on startup
[+] Added Portuguese (Brazilian) and Belorussian translations

Download:
http://downloads.guru3d.com/download.php?det=733

btw... thanks bro...

Wierd... I can't seem to change the core and memory clock speeds. My display will just go distorted and I'll have to restart. Quite a nice tool though. Maybe mine is a laptop graphics card

wanna check , is tis ATI TOOL???

or they change they name liau>??

noob question: can I use this on nvidia's cards?

ATiTool != ATiTrayTool
googled?

NO
nvidia = nvTrayTool