Red Devil..... if you are buying the hardware now, go with 939 dual core. If you are looking to OC at all go with the opterons, 165 or 170..... otherwise get a X2 3800 or the next model up. Anything above that and the price to the performance is to high. It's been rumored that you may even be able to stick AM2 chips into a 939 mobo with an adaptor, but I don't know if that holds water. Keep in mind, this month AM2 will release, and for a better upgrade path, you might want to consider that. Conroe will not be out for a few months so that might be to far away.