Thanks Hood. This is an odd CPU I think, it's an XP2800 with a 266 FSB, normally the highest speed processor with that bus speed was a 2400. I bought it for my main computer but it seems to be a problem for it, it gets to the windows load screen with the little moving bar, and then the bar movement freezes. I think it's actually a 333 FSB chip, you never know what you get on Ebay... ANYWAY, the motherboard on my Mach3 lathe has a changeable bus speed, so I thought it might work there, but I have no real reason to use it on that computer though, just buyer's remorse and the human need to upgrade everything....
Dave.