Mick, what do you mean by standard? Is it a brand name computer or custom built? Either way if the mobo doesn't support MMX or the over 200MHz CPUs, you can drop a P200 in it and change the jumper settings and that's as high as you can go. Quite simple procedure actually. HTH Jose Mick Fitzpatrick wrote: > Greetings > > I want to up grade my standard P166. But that's all I want to do. So any > advise on the highest I can go with a new processor that will simply fit my > existing slot will be appreciated. > > Thanks...Mick