??? What do you mean? If you are trying to up your overclock, lower your multiplier down to a none .5 multiplier (11,10,...) and then increase the fsb. Because your stock fsb is 166, you'll probably make it up to above a 200 with a good amount of vcore. Or if you want the highest Ghz, just raise the fsb to like 180 something and then raise the multiplier until Prime fails. I'm guessing that's the way you would do it, although my processor is locked and so I can't change my mult. so my help in that area is a little weak. My sig is a 2600 Barton at a 203 fsb at 1.875V. Don't try to overclock to a high level until you have the cooling to handle it though. If you have any more questions just ask.