Determine Power Supply

Okay one area in computer hardware I've always been suspicious of my knowledge is the power supply. I know the current common power supplies are of type ATX but from there I'm lost, mostly since I've never once had to change one. Well now I do...

I got two comps, both using ATX, however one comp's power supply was broken and thrown out before I got ahold of the comp. I am only guessing it is ATX since power supplies with ATX on the side are the only ones which have the same 24-pin plug.

How on earth can I determine if one ATX will work with another mother board? This is power we are dealing with, the last thing I want to do is feed the cpu a few extra...

Any advice?

Power supplies allow a lot of leeway. The computer will only use a certain amount, based on peripherals that are installed. As long as the PSU can provide enough power, the computer is happy. It's better to have a higher rated PSU, so that it only has to work at 75% output, which will extend its lifespan.

It doesn't hurt to put an oversized (watts) PSU into a system.

I replaced a 200W PSU with a 350W PSU in my P4. If anything, go high.

Okay sounds good, that is kinda what I figured but wasn't sure.

So my mobo will not drain excessive ammounts if the power supply is attempting to provide it...

Well if my computer bakes into a well made loaf of baked bread I'm blaming you :) LoL

Thanks for the tip.

Quote:

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Originally Posted by Halsafar

So my mobo will not drain excessive ammounts if the power supply is attempting to provide it...

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This is a general statement that you can apply to any piece of electronic equipment. The only thing that one has to worry about is supplying the correct voltage. Nothing will EVER drawn more current (Amps) that it needs (i.e. use more power - WATTS), unless of course it has a short! Anyways, if your power supply is not able to supply enough power (Watts) then your more than screwed! So don't be afraid to buy a bigger supply, it won't hurt anything.