In our world today, the quality of a personal computer is often measured only by its processor speed, memory capacity, and hard drive space and for gamers, the quality of the video card. Sometimes, the computer monitor will grab some attention, especially if it has an LCD screen. Seldom, however, do we think of a computer by its power supply. And seldom do we give them an upgrade, even if we have upgraded each and every other computer component.

But when the power supply is damaged or stops working, we have to think about it, or we have no computer period. The only solution is a power supply replacement.

There are a lot of computer power supplies available in computer shops, so finding one should not be difficult. Replacing your power supply with a new unit should also be easy. The hard part is selecting the power supply that your computer needs. There are different kinds of power supplies and each has different specs. For your computer to work properly, it must be equipped with the right one.

There are two basic things to consider whenever you are buying a new power supply for your computer -- power requirements and the power supply's form factor.

Power Requirement

Modern power supplies have power outputs that range from 200 watts to 500 watts. Before purchasing a new power supply, you must first know the amount of power that each of your computer