I have been stalling the move to two systems myself. I am running 8 WoW's fairly smooth but I have a perfectly nice single core 3.0GHz system with 3GB of RAM sitting inches from my monster box that could run at least 2 (I know for a fact) WoW's with ease. But why bother if I'm doing 'OK'? Like the old dog laying on the nail. It don't hurt bad enough to move, just bad enough to complain about it :/