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Thread: ATX power

  1. #1
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    Question ATX power

    Now maybe I am missing a step... but when you power down an atx based pc the entire thing loses all its power... SOOOOOO then to power back up you have to use the power switch! Now is there anyway around this? I dont want to have to run the wires up front unless I really have to!

    Thanks

  2. #2
    Newbie JrFaust's Avatar
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    Cool

    Sorry I can't remember where I got this link but check it out this might help you
    http://www.dschmidt.com/autooff.html
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  3. #3
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    Post

    As far as i know;

    When you shut down an ATX based PC, there is still some power running through the motherboard. That's how boot-on-lan and boot-on-keypress works on an ATX based PC.

    If you have a keypad (yikes) attached to your PC, you could activate boot-on-keypress in your BIOS if it supports it.

  4. #4
    Raw Wave Rob Withey's Avatar
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    Post

    Also, a lot of ATX motherboards that I have seen have a BIOS config entry which determines what they do when they receive power, either go into standby or boot up. Dells in particular are like this.

    Rob


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  5. #5
    Raw Wave wizardPC's Avatar
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    are there any systems out there that go to SUSPEND mode when the car turns off? is this even a good idea? how much does a 250watt ATX board draw on suspend? anybody?
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  6. #6
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    Post

    Your computer can take anything up to 6W in suspend mode (ATX 2.01 specification). With an efficient power supply (good DC-DC) this would mean about 0.5A continuous draw from the battery in suspend mode. If you used a inverter the efficiency would be much less and current drain could be up to 1A.

    With a good condition battery you could probably leave the PC for a few days in suspend mode without problem but much longer and you could have trouble starting the car.

    Sproggy http://www.sproggy.com

  7. #7
    Raw Wave wizardPC's Avatar
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    are there any UPS type systems that go to SUSPEND rather than SHUT DOWN?
    can I use your (sproggy) power supply to do this?
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