Ending today, Newegg offers the Rosewill 600-watt ATX Power Supply, model no. VALENS-600, for $59.99. This $20 mail-in rebate drops it to $39.99. With free shipping, that's the lowest total price we could find by $20. This 80 PLUS gold certified PSU features a 120mm fan, two PCI Express connectors, and six serial ATA connectors.