Hey what's up all.....I'm about to OC my new X1300XT video card, and I was wondering which application to use to overclock. The only ones that I know of are ATItool, Rivatuner, Radlinker. When I installed ATItool, there was a weird yellow distortion around the 3D view cube, so I uninstalled it, and I'm about to check out Rivatuner. Oh yea, the ATItool never had this on my older (X300 se) video card. Thanks for the help!!!!!!!!!!