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Power Supplies
Ordinary electronics work just fine with the AC power that comes out of the wall. Computers, however, have some delicate parts, and computer hardware has to be designed specifically to meet those delicate needs. Good computer power supplies are critical to keeping your laptop computer or desktop computer healthy, much the way online shopping at Overstock.com can help keep your family financially healthy.
First, your computer power supply will change the AC power into DC power. Then, it will distribute DC power to the motherboard, CD burner, DVD burner and everything else in your computer system. If the capacity of the power supply (measured in Watts) doesn't match the power used by computer equipment, one or both are going to break down long before they should.
Computer power supplies should be rated at about twice the power you expect to need; this means they can deliver when you're using every component in your computer system and will work efficiently for your computer's normal operation. Among the popular sizes are 450 Watts and 550 Watts. All computer power supplies have a fan, because they generate heat. One thing to look for in your next computer power supply is a ball-bearing fan. They tend to be quieter than other types.
One common problem for computer power supplies is computer games. The newer 3-D video games require an upgraded video card, one that needs more juice than many factory-installed video cards. Whenever you upgrade desktop computers or laptop computers, make sure you check the computer power supply as well; during the upgrade, it's a simple fix; after you've had a breakdown, it's like shopping retail instead of Overstock.com--it will cost you more.
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