I am really wanting to OC my P4 2.4GHZ cpu I have had for a while. My motherboard is an ASUS P4800SE. I currently run about 35C or below at idle. Here are some stats I got from my BIOS: P4 2.4GHz FSB Speed: 533MHz Ratio Status: Locked Ratio Actual Value: 18 Vcore Voltage: 1.36V Now here are the option I have for OC in my BIOS: ADVANCED TAB JumperFree Config CPU config Chipset unneeded stuff... Now under JUMPERFREE CONFIG AI OVERCLOCK TUNER(Manual, Standard, OC 5%, OC 10%, OC 20%, OC 30%) Performance Mode (enhanced system performance-> (Auto, Standard, Turbo) AI OC TUNER-> Manual CPU External Freq. (100-400) currently 133 DRAM Freq. AUTO (266,333,400,500,533MHz) AGP/PCI freq (66.66/33.33)(72.73,36.36)(80/40) CPU Core Voltage AUTO - (dif volts) DDR Reference Voltage - (dif volts) AGP VDDQ Voltage AUTO - (dif volts) ----- Now, I have tried the OC Tuner 5% preset and 10% preset. This cause system to crash, although I was at 55C idle (very dusty, now cleaned). Should I use the presets or adjust the other settings I showed? Is the CPU EXTERNAL FREQUENCY what I need to change? What exactly does the PERFORMANCE MODE do? (TURBO?) ---- Any help is greatly appreciated!!