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Power Supplies
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Power Supplies

  TIGER'S TOP SELLERS  
Ultra LSP750 750-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty
  Ultra LSP750 750-Watt Power Supply
The new LSP is the latest addition to our line-up of professional power supplies. It provides the ultimate amount of power and performance.

Only $69.99

XION Power Real 1000W ATX Power Supply
  XION Power Real 1000-Watt Power Supply
When building your computer, your best bet to reliability is getting a sturdy yet powerful power supply.

Only $109.99


1. 
Ultra LSP750 750-Watt Power
2. 
Ultra X3 ULT40312 850-Watt P
3. 
XION Power Real 1000-Watt Po
4. 
Ultra LSP550 550-Watt Power
5. 
Ultra LSP650 650-Watt Power
6. 
Corsair TX750W 750-Watt Powe
7. 
Ultra X3 ULT40311 1000-Watt
8. 
Ultra LSP450 450-Watt Power
9. 
Ultra X4 850-Watt Modular Po
10. 
DiabloTek 400-Watt Power Sup

Also Available:
Overstock - Power Supplies


Ultra X3 ULT40311 1000-Watt Power Supply
Ultra X3 ULT40311 1000-Watt Power Supply - ATX, SATA-Ready, PCI-E Ready, Energy Efficient, Modular, Lifetime Warranty
Only $189.99 

 
Thermaltake 700-W PSU
Thermaltake / ToughPower / 700-Watt / ATX / 140mm Fan / SATA Ready / SLI Ready / PFC/EPS / Power Supply, 80Plus
Only $154.99 

 
OCZ ModXStream Pro Power Supply
OCZ ModXStream Pro Power Supply - 700-Watt, Modular, Dual +12V Rails, SATA, 80Plus
Only $49.99 after rebate* 

 
Apevia Iceberg 680-Watt Power Supply
Apevia / Iceberg / 680-Watt / ATX / Dual 80mm Fan / 20/24 Pin / SLI-Ready / SATA-Ready / Blue / Power Supply
Only $100.00 

 
Ultra LS600 Lifetime Series 600W Power Supply
Ultra LS600 Lifetime Series 600W Power Supply - ATX, SATA-Ready, PCI-Express, Lifetime Warranty
Only $49.99 

 
DiabloTek PHD650 650-Watt Power Supply
DiabloTek PHD650 650-Watt Power Supply - ATX, SATA Ready, PCIe Ready, 20+4 Pin
Only $59.99 

 
DiabloTek PHD550 550-Watt Power Supply
DiabloTek PHD550 550-Watt Power Supply - ATX, SATA Ready, PCIe Ready, 20+4 Pin
Only $49.99 

 
ThermalTake 500-Watt Power Supply
ThermalTake / PurePower W0100RU / 500-Watt / ATX 2.0 / 120mm Fan / 20/24-Pin / SATA-Ready / PCI-E Ready / Power Supply
Only $59.99 

 
Thermaltake PurePower 430-Watt Power Supply
Thermaltake PurePower 430-Watt Power Supply - ATX, Dual 80mm Fan, 20/24-Pin, SATA Ready, PCI-E Ready
Only $29.99 after rebate* 

 
Ultra LS350 Lifetime Series 350W Power Supply
Ultra LS350 Lifetime Series 350W Power Supply - ATX, SATA-Ready, PCI-Express, Lifetime Warranty
Only $29.99 

 
DiabloTek 400-Watt Power Supply
DiabloTek / 400-Watt / ATX / Dual 80mm Fan / 24-Pin / SATA Ready / Power Supply
Only $19.99 

 
Power Up 550-Watt Power Supply
Power Up / 550-Watt / ATX / 120mm Fan / SATA-Ready / Power Supply
Only $31.99 

 
Coolmax 400-W PSU
Coolmax / V-400 / 400-Watt / ATX / 80mm Fan / SATA-Ready / 20/24-Pin / Power Supply
Only $19.99 

 
Ultra Power Supply Tester
Ultra 20/24 Pin Power Supply Tester
Only $19.99 

 
DiabloTek 250-Watt PSU
DiabloTek PSDA250 250-Watt Power Supply - ATX, 80mm Fan, Aluminum
Only $14.99 

 
OCZ 700-Watt PSU
OCZ / GameXStream / 700-Watt / ATX / 120mm Fan / SATA Ready / SLI Ready / EPS / Active PFC / Power Supply
Only $79.99 after rebate* 

 
  Power Supplies Subcategories
Accessories (132) 700W + (25) 80 Plus Certiified PSUs (27) 
less than 300W (2) 800W + (23) Modular Power Supplies (28) 
300W + (11) 1000W + (15) Notebook Chargers (361) 
400W + (25) 1200W + (10) Power Protection (905) 
500W + (29) SLI Certified PSUs (22) mATX (3) 
600W + (31) Crossfire Certified PSUs (5) 


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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