The Celerons that are currently out are generally running faster than most of the PIII's. Most of the systems out there are P4's. I'm really wondering exactly what he was trying to sell you. I would look at an AMD instead myself, lower priced motherboard and chip, which would allow you to beef up your ram for approximately the same price, and get a faster processor generally as well. Also make sure that there is a video card and not a video chip. Most of the Intel boards have a shared video/system ram chip on board.