your sys will probably be fine for most games that'll come out this year, but for the next gen shooters in particular you'll want to upgrade. you could consider going the dual core path and getting a 4200+ or a 3800+. for this you'll need a new mobo, probably a new power supply, some new ram (2x512mb corsair or mushkin is good), and a pci express vidcard (lots of good budget choices). you should be able to get a decent sum of money for your current stuff though, so it doesn't have to be too expensive...

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