Hi. I read somewhere that if you get a power supply that's too high for your machine (in other words you're not using all the watts) you can damage your computer. Is this true?

no, the only way it can damage your machine is in the event that it fry's!! Since it has the capacity to hold more power, it takes more power to fry it. therefore in the event of a failure, it takes more energy from the wall and then exlpodes where a smaller PS will take less energy in the explosion.

Whoever told you that doesn't understand the difference between Watts, Amps and Volts. Even if you put a 1000 watt power supply in your computer, if such a thing was available, and your computer only needed 300 watts, 300 watts is all it would use. Stuart

That only goes to show believe half of what you see and none of what you read (I know it's hear). Wherever you read that, I would not read another thing from that person/ magazine. We can fix this, but you're gonna need a butter knife, a roll of duct tape, and a car battery

yeah, i second that, do not read another thing from that person, lol Prescott 2.8ghz @ 4004Mhz 286x14 FSB @ 1144Mhz 512x2 @ 430mhz 9800 se clocked @ 450mhz/820mhz

The devices in your comp will consume what it needs from the power supply. If the power supply is large enough everything will be just fine. If it is too small it will tax the supply and voltages will sag and components will suffer. If you have a proportionaly sized supply and you have a catestrophic component failure you will have a small puff of smoke. If you have a large supply you will have a big puff of smoke. DESPERATION is the mother of invention