I'd personally suggest you shell out the extra $20 or so and get yourself a power supply that will have 0 trouble with what you want to do, especially if you ever choose to OC. I have a 650 watt Corsair TX and it should work perfectly for you. 500 is sure, good enough, but do you want good enough or, know will get the job done safely and will be good enough if you ever upgrade a certain part or add something new into your PC? 500 watts just isn't as good for possible expansion, but yes, it will get the job done, so long as your video card isn't too hardcore. A lot of the newer ones are requiring more juice.