Really nice PSU for the price at a place you can pick up in store, and authorized seller to have a 5 year warranty.
http://www.bestbuy.com/site/corsair...er-supply-matte-black/5845214.p?skuId=5845214
650W is the perfect balance for four PCIe connectors as you still have some headroom with most dual card solutions, without having to pay extra for un-needed wattage. 2 of these linked together offer great bang for buck for mining rigs, and reading reviews, they are designed to be ran at higher temps.
http://www.bestbuy.com/site/corsair...er-supply-matte-black/5845214.p?skuId=5845214
650W is the perfect balance for four PCIe connectors as you still have some headroom with most dual card solutions, without having to pay extra for un-needed wattage. 2 of these linked together offer great bang for buck for mining rigs, and reading reviews, they are designed to be ran at higher temps.