Overpowering a PC

Discussion in 'Computer Components' started by slash_gnr3k, Mar 8, 2013.

  1. slash_gnr3k

    slash_gnr3k
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    Hi everyone, I have recently fitted a 500W PSU to my system which is probably overkill for what I need. It is an OCZ modular.

    My question is, will it use the whole 500W of power if it isn't needed (and therefore I would be charged this by the electricity company!)
     
  2. mjcairney

    mjcairney
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    It will only use what is needed. All it means is it can handle 500W if it needs to.

    Cheers,

    Martin.
     
  3. spyder viewer

    spyder viewer
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    Just to add a little on why we suggest putting in a psu that is reasonably matched to the required draw instead of slamming in the biggest we can find, is that psus have an efficiency overhead that is generally proportional to the power being consumed but also have a power budget that is fixed, but is proportional to the overall rating of the psu. By way of an example, let's say you have a 1kW psu with a wastage of 50W. If you are running at 500W, it's just 10% being thrown away, but if you are only drawing 50W you've doubled your electricity bill.
     

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