How to Buy a Power Supply of the computer
The power supply is the most important part in every computer. It is source to supply a steady, reliable power to every other component in the computer, and it must do so without heat or noise. If the power supply is incapable of providing the power needed, data corruption and possibly physical component damage could result. It is necessary to choose a quality power supply when buy a new computer.
Power Supply Compatibility & Connectors
The important feature of a computer power supply is its compatibility with system. A power supply's main connection is with the motherboard, and there are now two main standards for desktop computers that must be considered. Older and less feature-rich motherboards use the 20-pin ATX connector. Latest more feature-laden motherboards use the 24-pin ATX connector. But we can use a 24 pin power supply with a 20-pin motherboard via an adapter, it is not recommended to attempt the reverse, for a 20-pin power supply was not designed to provide the necessary voltage to all those wires.
In addition to main motherboard connectors, power supplies also differ in the other connections.. All power supplies have 12V molex connectors which are used to power peripherals such as CD/DVD-ROM, CD/DVD Writer, hard drives, and case fans. Make sure the power supply offers enough molex connectors to meet all of your needs. In addition, the emergence of SATA hard drives and PCI-Express video cards means that you must make sure the power supply provides these features if you plan on implementing them in your computer.