Is it better to have a power supply that is too low wattage or too high wattage for you computer? How can you figure the minimum wattage required to run your PC?
by 
Zandalee.Lonely.Lunatic.3yrs-here
ANSWERS: 2
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Too high. The wattage rating is a MAXIMUM. The actual power draw is determined by how much the system needs, not the rating of the power supply. By the same token, a car only goes as fast as you tell it to by pressing the gas pedal; it doesn't run at full throttle all the time. It's really difficult without knowing what sort of system you have. What processor do you have? That is a BIG draw right there; potentially over 100W. What about graphics cards? Mine requires a power connector as the AGP slot can't supply enough power on it's own. How many drives do you have? Case fans? Case lights?
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the average system today needs at the very least 500w, I know I will not build one with less than that and prefer 750w if I can get them to buy that.More is better as jerv suggested because everything in todays new systems need more power not less.
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