Any decent quality 500 watt supply or more will run that machine just fine. You are probably going to be using less than 275 watts at your peak anyway. Just look for something that has it's 12V rating capacity somewhere near it's overall capacity and from a good name like Seasonic, Antec, Corsair, XFX... you can find reviews online pretty quickly for naything you might think of buying, or post the model here and ask.