Newegg offers the Corsair CX Series 600-watt ATX Power Supply, model no. CX600, for $56.99. This $20 mail-in rebate cuts it to $36.99. With free shipping, that's the lowest total price we could find by $18, although we saw it for $7 less last November. This 80 PLUS BRONZE-certified PSU features a 120mm fan, two PCI Express connectors, and six serial ATA power connectors. Rebate expires August 18.