Newegg offers the Rosewill Capstone 850-watt Modular Power Supply, model no. Capstone G850, for $84.99. This $20 mail-in rebate drops it to $64.99. With free shipping, that's the lowest total price we could find by $27. It is 80 plus gold certified and features a 135mm silent fan, 10 SATA connectors, six PCI Express connectors, and SLI and Crossfire support. Rebate expires October 20.