Exactly how much is "plenty of RAM"?
I agree with damgar-- I've worked on XP machines with 256Mb, and what a kludge! Windows is more swap-centric- swapping all it can to "save resources", while Linux is more RAM-based, swapping only when necessary. If you can mix and match RAM cards to balance out to at least 512Mb for XP, that would be your best bet. And yes, RAM will interchange between Pentiums and Celerons, as long as they have the same pin configuration.
Last edited by DragonSlayer48DX; 03-30-2010 at 10:20 PM.