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Thread: Power!

  1. #1
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    Power!

    Does anyone know aprox. each computer (an average maybe) running makes your power bill go up?


    I think I worded that right but I am vary tired so who knows.

  2. #2
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    Well I suppose it would matter on the wattage of your PSU among other things, I'm not really sure but I would think that it would vary significantly from system to system.
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  3. #3
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    Using my laptop over my desktop can make a big difference, I save maybe £2.50 a week by having the laptop on 24/7 as opposed to the desktop.

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  4. #4
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    An electrician told me that putting your computers to sleep every night will significantly reduce your bill, so I guess they use little or no power in sleep mode if that helps.
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  5. #5
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    What is the cost per unit in the USA? I've used an average cost of 9.38p per unit.

    A 500W power supply running 24/7 in the UK would cost approx £1.13 ($2.13) per day. Which to me seems like a lot of money! That's just the computer as well, not the monitor. Although it won't be running at full whack for all that time so it should be less overall.
    Last edited by Vortex-Steve; 10-04-2006 at 09:52 PM.
    Steve

  6. #6
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    This was a test a guy did, the system had a 500w PSU also:

    Given the cost of electricity to be 12 cents per Kilo-Watt hour, the cost to run the PC 24/7 under the Average Power Consumption is:
    (0.530 KW * 720 hours * 12 cents per KW/h) = 4579.2 cents = $45.79 / month!




    OK my font is orange now, anyway that was with a system that had these specs:

    Motherboard: Asus A8N-SLI-Premium
    CPU: Athlon X2 4400+ (2 x 1MB cache)
    RAM: 2 GB OCZ
    Video Card 1: Geforce 6800 GT, 256 MB
    Video Card 2: Geforce 7300 GT, 256MB
    Hard drives: 3 SATA: 250, 300, 300 GB
    Sound Card: Creative X-Fi
    DVD RW(s): Two, various brands
    Floppy: Existing
    USB Hub / Devices: Web cam, USB dongles etc
    Displays: Three 24" Dell 2405/2407 FPW
    <li nd="8">External Hard Drives: Two, Maxtor One-Touch - Not Included


    So I don't think that a typical desktop would cost as much to operate.


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  7. #7
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    Quote Originally Posted by HC-Josh
    This was a test a guy did, the system had a 500w PSU also:
    The problem with this is that the wattage is the DC side, not the AC side. You need to figure out how many AMPS or WATTS that is being pulled from the recepticle.

    I had a "500w" PSU, but only pulled 2.9A (actual load on the AC line, and you are being billed by this, not the DC side )

    2.9A @ 120v = 348 Watts
    (0.348 * 720 hrs * 13 KW/h) = $32.57

    Which it costed me $32.57 with JUST my computer and no monitor, router, printer, speakers, etc...

    Now, with all my "usuals" maxed (which I never do) I pulled 5.7A which is 684W
    (0.684*720*13) = $64.02

    BTW, I *think* our kw/h is 13 cents... I'd have to wait for the next bill to verify.

  8. #8
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    Thanks for clarifying, I only have a 350w PSU anyway so I doubt my operating cost is particulary high.
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  9. #9
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    Quote Originally Posted by HC-Josh
    Thanks for clarifying, I only have a 350w PSU anyway so I doubt my operating cost is particulary high.
    about $5.00 a month

  10. #10
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    Laptop (IBM T30) + Desktop (Apple G4) + everything else in the apt. (fridge, tv, etc.) on 24x7 is only about $35/month for me.

    Upgraded to the MacPro about 6 weeks ago, but I had decent air conditioner usage and was gone for a week, so the bill is all out of whack at $52.
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  11. #11
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    Quote Originally Posted by music
    about $5.00 a month
    not bad at all
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  12. #12
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    Quote Originally Posted by MGCJerry
    The problem with this is that the wattage is the DC side, not the AC side. You need to figure out how many AMPS or WATTS that is being pulled from the recepticle.

    I had a "500w" PSU, but only pulled 2.9A (actual load on the AC line, and you are being billed by this, not the DC side )

    2.9A @ 120v = 348 Watts
    (0.348 * 720 hrs * 13 KW/h) = $32.57

    Which it costed me $32.57 with JUST my computer and no monitor, router, printer, speakers, etc...

    Now, with all my "usuals" maxed (which I never do) I pulled 5.7A which is 684W
    (0.684*720*13) = $64.02

    BTW, I *think* our kw/h is 13 cents... I'd have to wait for the next bill to verify.
    I feel bad for the theater where i work (I am the head lighting tech there).

    124 lamps, each 575 watts
    124 * 575 = 71300 watts = ~71Kw/hour
    71 * 13 cents = $9.23/hour
    $9.23 * 8 = ~ $75 per event

    and thats without A/C, special effects, house lights (452 40 watt lamps)

    It's pricy

    Matt
    Matthew Rosenblatt, and I do lots of things.
    Currently a Master Electrician on Broadway.
    My company, BurstAV, specializes in A/V Systems Design and integration.
    I also own ConcertCables. We build power/data cables for the entertainment industry.

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