I am getting my new system put together today that consists of a P4 2.53GHz processor and a Intel 850E chipset motherboard (Gigabyte 8IHXP). From a previous post I have learned that the only way you can overclock the P4 is by increasing the FSB. Is this true? If so then why do most of the new board have settings to increase voltages for different components (RAM, AGP, etc). Are these voltage settings here to help overclock? If so what procedure should I use to test the different settings?