PSU Volts to Watts Conversion?

Nishchal26

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Jun 7, 2014
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So I am new to computing world.I wanted to check my power supply in watts but instead it showed in a sticker something like this-[INPUT: 230V~ /3A][50-60 Hz] I just wanted to know how much is it in watts.Need an answer fast.Also I am new to this thread so help me please.Fast!
 
Volts and watts are not particularly related; they're measurements of different quantities.

With the fact that it's 3 amps, we know that the maximum input power is 3x230=690W. This doesn't account for inefficiencies or power factor though, so output power will be less than that.

What's the model?
 

bwrlane

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Oct 5, 2010
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It should say somewhere what the wattage is.

The Volts tell you nothing. That's just about how hard the electricity is "pumped" into the device. The Watts are about the power. Linking them is the current, measured in Amps, which is about how fast the electricity is flowing through the device. Volts x Amps = Watts but that is only about the input power not the output power. If you can't find the watts on the power supply then maybe find the model number and google it.
 
Input is not relevant.
What you want to know is what the output amps are on the +12v rails. That is the voltage that almost all of the power hungry components use(cpu and GPU)

If you do not see amps, but watts, the formula is amps =watts/volts
 
Well, try it then; I would not.
But, a 250w psu is likely a very cheap generic unit that may not deliver advertised power.
And, if it fails, under stress, it will not have the protective circuitry to keep it from damaging anything it is connected to.

$40 will buy you a 400w Seasonic psu.


 

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