I don't have a dual core (will get one next time) I only have a single core AMD 64 3500+ @ 2.2Ghz (is equal to a 3.5Ghz P4). Your machine should be fine though Twitch unless you want to do a lot of gaming. You could always wait for the next generation of processors to come out (Intel ones should be August) this will also result in a price drop of the older models..