Corsair is a good brand, but I recommend 500 watts minimum. The rosewill I recommend has around 50 amps on the 12v rail, and good newegg reviews. If you want modular, you'll need to spend around $90 or more for a decent brand with 50 amps on the 12v rail, so the rosewill isn't a bad choice. If you can travel to a microcenter, you should be able to get a motherboard combo with the motherboard almost free after discounts. Talk to a store manager if the salesperson doesn't know what discounts are available.