I have an Asus P4C800 Deluxe mobo and a P4 2.6 800 mhz FSB. Oh yeah, I also have 2 gigs of OCZ EL 2-3-2-5. I was considering getting a good Zalman/Thermaltake cooling fan, such as the CNPS9500/Big Typhoon. Is it worth getting the CNPS9500/Big Typhoon over some of the cheaper $30-$40 Zalman fans, such as the CNPS700B? Alright, for my main question: if I were to buy some thermal grease and a good CPU fan/heatsink, how much of an overclock do you think I could get out of my P4?