My brother just upgraded his k6-2 350 to a 550 and added 128 meg pc100 ram to a total of 192. He is still not to happy with frame rates and quality of UT, Halflife, MXM 2. Being that he just dropped some cash on the ram, what is a good cpu/mb combo thats not to pricey? He's not to sure about the overclocking thing but if it is an easy job he might just go for it. I figure he wants a 750 or higher. He's running a Voodoo 5 5500. He is also running two case fans(in and out) so a little heat is not a problem.