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  1. #1
    3 Star Lounger
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    Computer Energy Use

    Does anyone have the information or know where I can get it? Computer at the log on screen is left running at night along with a lcd monitor. Purpose the machine is left on is for IT to do updates. Monitors are left on for no good reason. How much energy might be being consumed in this situation?

    Reason for question is if governments and corporations are going "green", I would like to point out that with the approximate 100,000 computers and monitors running (24/7) in our organization, the $ and energy which could be saved by turning them off.

    Thanks.

  2. #2
    Platinum Lounger
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    Re: Computer Energy Use

    I did some work on this several months ago with a power meter, but don't have the figures at home. I'll look it out tomorrow, but this is how I remember it.

    The power usage of system units and monitors will depend on a number of factors:<UL><LI>how new or old the equipment is - you can do more energy-saving more reliably with newer PCs<LI>whether the system unit is set to standby or hibernate, or just left in normal mode<LI>whether the monitor is LCD or CRT - LCD takes much less power<LI>whether the monitor is set to go into low energy mode after a time[/list]Your IT department should be able to use WakeOnLAN to wake up a PC from standby or hibernate to do the required update(s), then cause it to power down/off afterwards. I do this on about 25 PCs once a week!

    John
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

  3. #3
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    Re: Computer Energy Use

    Well here is a lovely fact from University of London <img src=/S/flags/UK.gif border=0 alt=UK width=30 height=18>

    VDU v Microwave meals
    Jerry

  4. #4
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    Re: Computer Energy Use

    I did find some information at Dell on the wattage for GX270 units plus an average for 17" LCD monitors. Our machines are left in normal mode and monitors are not set to go into low energy mode. Based on what I found I used 215 watts for both computer and monitor. May be low, but it is a figure I can use for my calculations of cost for 24/365.

    I like the suggestion about the WakeOnLAN. Will look into it.
    Thanks for the reply.

  5. #5
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    Re: Computer Energy Use

    I found my figures for power usage of our computers, which I have attached as an RTF.

    John
    Attached Files Attached Files
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

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  6. #6
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    Re: Computer Energy Use

    And here's an article based on the figures in the previous post - perhaps somewhat repetitive?

    John
    Attached Files Attached Files
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

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