Newegg offers the Rosewill Quark 750 750-watt 80 Plus Platinum Full Modular ATX Power Supply for $109.99. Redeem this $20 mail-in rebate to drop it to $89.99. With free shipping, that's $5 below our May mention and the lowest total price we've seen. (It's the best deal now by $20.) It features four PCI-Express connectors, eight Serial ATA connectors, and a 135mm fan with automatic speed control. Rebate ends September 30.