I just went out and baught an AMD XP 2600+ 333mhz FSB. Also an MSI KT4V motherboard and 512 meg of DDR 400mhz RAM. When it boots it displays the clock speed as 1250 not 2600+ or 2080. I have tried settign the RAM and CPU and PCI Bus speed to no avail. The highest ive gotten is 2000+. I dont think this is right because of the '+' but it might be im not sure. To acheive that I can leave PCI AND RAM speeds alone and just set CPU FSB to 133*2 in BIOS. After doing this and not having the thing trun it self off I watched the core temp. It slowly rose to about 76*c without crashing. I didnt watch it go any higher but my guess is that it would have stoped at 80*c. The heatsink and fan are the onse that came with the cpu and they are attached correctly. also it does let the RAM run at 400 without dying, I just cant get the cpu up to what it is supposed to be. Im thinking it might be because they gave me the wring cpu(the 266FSB instead of the 333FSB) but I doubt it. Thanx ALOT in avdance I really apreciate anyone who can help me in any way(even if i just learn something that doesnt help me any). L8rs all!