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less than 300W (4)
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600W + (27)
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800W + (9)
1000W + (12)
SLI-Certified PSU (29)
Accessories (73)
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Notebook Power Adapters (192)
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Power Supplies

   TOP SELLERS  
  Famous Brand 700-Watt Power Supply
With the Famous Brand 700-watt power supply, youíve 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 GameXStreamís 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 

 
  Power Supplies Subcategories
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.


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