Guide to Computer Power Supplies

Computer Power Supply : What is it?

Computer Power Supplies

Computer power supply, also called power supply units (PSUs), provide power to the computer and its components from an AC source. They also convert AC mains power to lower DC voltages to be used by individual components. Several wires connect the power supply to other components, including the motherboard and certain types of graphics cards. They also have dedicated cooling systems to help regulate heat and reduce energy loss.

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Types of Computer Power Supplies

Computer Power SuppliesComputer Power Supplies

Kinds of Computer Power Supplies include the following:

Internal power supply

  • Internal power supplies are installed at the back of the computer case, with a cord connecting them to the AC source.
  • They are better protected from dust, moisture and outside elements than modular PSUs.
  • They tend to clutter the computer case and may be difficult to troubleshoot.

Modular power supply

  • Modular power supplies are housed outside the computer case.
  • They have several cables that the user can plug to preferred devices.
  • They free up space inside the computer space for better airflow, but are more prone to damage from outside elements.

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Choosing Computer Power Supplies (Buying tips)

Wattage: Choose a power supply with a power output of 300 to 500 watts to power all the components during regular use. For heavy applications like gaming and multimedia, look for one with about 500 to 800 watts. Choose a higher wattage if you plan to add components.

Number of connectors:
Choose a power supply with enough connectors to power all the internal components. Look for extra 4-pin connectors for additional components, but make sure they do not crowd the computer case.

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Helmet Cameras
IDE Cables
Ink Cartridges
Inkjet Cartridges
Inkjet Refill Kits
Keyboard Covers
Keyboard Holders
Keyboard Trays
Laptop Bags
Laptop Batteries
Laptop Covers
Laptop Security
Laptop Skins
Laptop Sleeves
Laptop Tables
Laptop Vehicle Mounts
Laser Toner Cartridges
LCD Monitor Arms
Memory Card Readers
Minipower UPSs
Modular UPSs
Monitor Arms
Monitor Software
Monitor Speakers
Mouse Pads
Mouse Trays
Null Modem Cables
Photo Papers
Port Replicators
Portable Computer Speakers
Portable Power Converters
Power Strips
Printable Graph Papers
Printer Adapters
Printer Cables
Printer Cartridges
Printer Inks
Printer Memory
Printer Ribbons
Printer Software
Printer Stands
Printer Toners
SCSI Adapters
SCSI Cables
SD Card Readers
Serial Cables
Smart Card Readers
Surge Protectors - Computers
Surge Suppressors
Toner Cartridges
Toner Refill Kits
Transfer Papers
UPS Batteries
UPS Systems
USB Adapters
USB Cables
USB Card Readers
USB Extension Cables
USB Printer Cables
USB Serial Adapters
Webcam Software
Wireless Computer Speakers
Wireless IP Cameras
Wireless Printer Adapters
Wireless USB Adapters
Wireless Webcams

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