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Computer Case Power Supply

When you buy your case, don't overlook the power supply   

 



Computer case power supplies are the most expensive component.

Computer cases usually include power supplies. But, since they are the most expensive component of the computer case, this is where manufacturers cut corners. They vary in rating and quality.

Most computer systems will do with a 220 to 240 watt supply, but many AMD brand processors, high performance 3D video cards, high speed hard drives, or installing too many drives can overload your power supply if it's not rated high enough. The problem may show up as random errors, rather than outright failure, so check the specs to make sure you have enough wattage to handle the load.

One trick is to listen to the cooling fan on your computer case while the system is booting up. The fan is driven by the 12v supply, and the speed will vary, and slow down if the power supply isn't up to the task.

If you plan to use an Athlon processor, especially with a video card using NVidia graphics, then your computer case should have a 300+ watt supply.

AMD has a list of approved power supplies for use with Athlon processors so check with the case manufacturer if you plan to use one.

If you need to upgrade your power supply, make sure you get the right one. There are differences between AT, and ATX case supplies.

The ATX has a small cable that runs to the motherboard to turn the power on and off. ATX cases have the soft-start feature that allows the system to turn itself off.

AT cases have 110v switches on the front of the case, and must be switched off manually.


To purchase power supplies click:
Economy Power Supplies  or  Premium Power Supplies



At or ATX computer case... which one do you need?

Desktop, or tower case... which one for you?

Mini, mid, or full tower case... what's the difference?

Computer cooling... is yours a "cool" case? ( and we don't mean looks )

Computer case maintenance... don't get reminded the hard way.

Back to Computer Case Guide

 


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