efficiency in psu

hi .
when you buy a psu, do you look at efficiency??
what is efficiency has to do with psus??
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More about efficiency
  1. HI I AM A STICKY OFTEN IF YOU READ ME I WILL ANSWER YOUR QUESTION(S)

    http://www.tomshardware.com/forum/243648-28-power-supply

    It's in that.
  2. jhyukkang said:
    hi .
    when you buy a psu, do you look at efficiency??


    Yes.

    Quote:

    what is efficiency has to do with psus??


    The higher the efficiency, the less electricity is wasted as heat, the lower the actual electricity drawn from the A/C outlet will be.

    Example: All the component in a PC will draw a total of 300w at full load.

    PSU #1: 70% Efficiency - Actual power draw from A/C outlet = 300w/70% = 428.5w = 128.5w wasted as heat.

    PSU #2: 85% Efficiency - Actual power draw from A/C outlet = 300w/85% = 352.9w = 52.9w wasted as heat. slightly lower electricity bill too.
  3. Daves255 said:
    HI I AM A STICKY OFTEN IF YOU READ ME I WILL ANSWER YOUR QUESTION(S)

    http://www.tomshardware.com/forum/243648-28-power-supply

    It's in that.
    Maybe he should watch this also. Posting And You
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