Power Supplies CORSAIR CMPSU-620HX ATX12V v2.2 and EPS12V 2.91 62 Corsair has engineered the HX620W with features such as whisper quiet thermally controlled 120mm fan, up to 84% high efficiency, combined 50A on triple +12V rails, and modular cable connections with enhanced flexible cables to provide sustained 620W output even at 50ºC to the most demanding of systems. The HX Series is the ideal power supply for high performance and gaming PCs, Audio/Video workstations, and file servers. Manufacturer Warranty Parts 5 years limited $ 212.50 Rosewill RP550-2 ATX 2.01 550W Power Supply 115/23 Black Chrome Mirror Finish Honey Comb Structure Fan Speed Control Switch (low, auto, and high) Support both Intel and AMD Systems Shielding Tube on Main Power Cable to Reduce EMI Built-in inrush current, over temperature, over current, and over voltage protection circuits Switching power supply. Customer Review: "Lots of power. Currently running 2 processors, 7 internal hard drives, 1 DVD-Rom, a USB card, and a RAID card. Blue light faces down in my case and provides a nice light for working inside the system." $ 70.00 Thermaltake TR2 W0070RUC ATX 430W Power Supply 115 The Thermaltake TR2 W0070 430W Power Supply is a solid, contemproary design that helps saves power. It has dual 80 mm fans that increase air supply within the enclosure, with one at the front for intake ("In goes the good air . . ."), and one in the back ("Out goes the bad air . . .") This increases overall airflow within the Power Supply Enclosure removing excess heat from the chassis, simultaneously. $ 50.00