Power Supplies		TOP SELLERS
Famous Brand 700-Watt Power Supply With the Famous Brand 700-watt power supply, you’ve got the perfect PS that will put an exclamation point on your system. Only $79.99	OCZ 700-Watt PSU Second to no other gaming PSU, the GameXStream’s unprecedented quality and performance is the ultimate solution for serious gamers. Only $99.99 after rebate*	1.  Ultra X3 ULT40064 1000-Watt 2.  OCZ 700-Watt PSU 3.  Ultra X3 ULT40064 1000-Watt 4.  Ultra 500-Watt XVS PSU 5.  Ultra X-Pro ULT40029 750-Wat 6.  Ultra X-Pro EE 600w APFC PSU 7.  Thermaltake 430-Watt PSU 8.  OCZ 600W StealthXStream Powe 9.  XFX nForce 680i LT SLI, Q660 10.  OCZ 1010W GameXStream SLI Po Also Available: Overstock - Power Supplies

Ultra X3 ULT40064 1000-Watt Power Supply Ultra X3 ULT40064 1000-Watt Power Supply - ATX, SATA-Ready, PCI-E Ready, Energy Efficient, Modular Only $299.99    BFG BFGR800WPSULE 800-Watt Power Supply BFG BFGR800WPSULE 800-Watt Power Supply - Quad PCI-Express Only $99.99 after rebate*    CoolerMaster Real Power Pro 750-Watt Power Supply CoolerMaster Real Power Pro 750-Watt Power Supply - SLI, SATA-Ready, 120mm Fan, Active PFC Only $149.99    Ultra X-Pro ULT40029 750-Watt Power Supply Ultra X-Pro ULT40029 750-Watt Power Supply - ATX, Dual 80mm Fans, SATA-Ready, SLI-Ready, Active PFC, Black Only $139.99    Ultra X-Pro EE 600w APFC PSU 130mm Fans Black Ultra / X-Pro / 600-Watt / 135mm Fans / ATX / SATA-Ready / PCI-E-Ready / Active PFC / Energy Efficient Power Supply Only $89.99    Thermaltake 430-Watt PSU Thermaltake / PurePower / 430-Watt / ATX / Dual 80mm LED Fan / 20/24-Pin / SATA Ready / PCI-E Ready / Power Supply Only $39.99    OCZ 600W StealthXStream Power Supply OCZ / StealthXStream / 600-Watt / ATX / 120mm Fan / SATA-Ready / PCI-e Ready / Active PFC / Power Supply Only $69.99 after rebate*    Power Up 550-Watt ATX Power Supply Power Up / 550-Watt / ATX / 120mm Fan / SATA-Ready / Power Supply Only $49.99    CoolerMaster Extreme Power 500W PSU CoolerMaster Extreme Power 500 Watt Power Supply - SATA Ready, 120mm Fan Only $49.99    PC Power & Cooling 750-Watt PSU PC Power & Cooling / Silencer / 750-Watt / Quad PCI-Express / SATA-Ready / Black Power Supply Only $159.99    Coolmax 400-W PSU Coolmax / V-400 / 400-Watt / ATX / 80mm Fan / SATA-Ready / 20/24-Pin / Power Supply Only $19.99 after rebate*    Apevia Dark Side 600-W PSU Aspire 600W DarkSide Alum Black PSU - Blue Sleeves Only $89.99    Xion 400-Watt PSU (OEM) Xion / 400-Watt / ATX / 80mm Fan / Power Supply (OEM) Only $24.99    Corsair VX450W 450-Watt Power Supply Corsair / VX450W / 450-Watt / ATX / 120mm Fan / SATA-Ready / Power Supply Only $64.99 after rebate*    NZXT PP-800 800-Watt Power Supply NZXT PP-800 800-Watt Power Supply Only $149.99    Ultra 500-Watt XVS PSU Ultra / X-Connect V-Series ( XVS) / 500-Watt / ATX / 120mm Fan / 20/24-Pin / Modular Power Supply Only $49.99

less than 300W (4)   700W + (15)   UPS and Surge Protectors (892)   300W + (15)   800W + (9)   Modular Power Supplies (6)   400W + (21)   1000W + (12)   Notebook Power Adapters (192)   500W + (11)   SLI-Certified PSU (29)   600W + (27)   Accessories (73)

Computer Power Supply

A computer power supply unit (Computer PSU) is the component that supplies power to a computer. More specifically, a power supply is typically designed to convert 100-120 V (North America and Japan) or 220-240 V (Europe, Asia and Australia) AC power from the power mains to usable low-voltage DC power (DC power supply) for the internal components of the computer. Some power supplies have a switch to change between 230 V and 115 V. Other models have automatic sensors that switch input voltage automatically, or are able to accept any voltage between those limits. Manufacturers of Computer Power Supplies include: Apevia, Axpertec, Cooler Master, Coolmax, Diablo Tek, OCZ, PC Power & Cooling, Ultra, and others.

The most common computer power supplies are built to conform with the ATX form factor, and laptop power supplies are also available. The most recent specification of the ATX standard is version 2.2, released in 2004. This enables different power supplies to be interchangeable with different components inside the computer. ATX power supplies also are designed to turn on and off using a signal from the motherboard, and provide support for modern functions such as the standby mode available in many computers. Computer power supplies typically come in different wattage sizes: less than 300W, 300W, 400W, 500W, 600W, 700W, 800W, 1000W. There are also SLI Certified PSUs. Laptops are a bit more specialized, and it is important to make sure that you purchase a laptop power supply compatible with your notebook computer.