While there are some boards out there that will support both single core and dual core proccessors...this one doesn't.

On the bright side this is one of the best overclocker boards out there with the UGURU software it is capable of attaining some very close specs to a dual core system simply by OC'ing....the downside is that the OC'ing has a profound affect on your SATA drives and would work a lot better if using PATA.