ok, so i used setfsb, found the correct pll. and i adjust some numbers, and click set FPS button. So if i want to overclock my CPU, is that mean i have to leave the program on everytime? How do i know its overclocked? The number under properties, my computer doesnt change. It stays at 3.2 Ghz and in setfsb i over clocked it to 4.2Ghz. How do i make setfsb work to overclock my computer?