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What is the easiest way to see how many watts my power supply has?

Can I see this by viewing something on my computer or Do I open up my PC and look and where on the power supply should I look?

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up vote 1 down vote accepted

All power supplies are different, so there's no general answer to your question. Most have some kind of label on them that should include their max power, though.

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Thanks, I found a label that said Max Power 480 Watts. Is that the rating? – L84 Nov 19 '11 at 7:10
    
Sure sounds like it. – Dolda2000 Nov 19 '11 at 7:13
    
Every PC power supply has at least +5V and +12V output, often -12V and newer ones +3.3V too. I suggest you to read Wikipedia article to understand what does this power number indicate. – Cougar Nov 19 '11 at 10:27

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