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Thread: Is my M1-ATX being overworked?

  1. #1
    Maximum Bitrate Snootch's Avatar
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    Is my M1-ATX being overworked?

    First off, see this thread.
    I believe the problem is power related as I don't have any problems detecting the hard drive when powered by a desktop PSU. Are the large 3.5" desktop drives that power hungry? Here is a list of devices running off the power supply:

    VIA SP-13000 1.3ghz Motherboard
    8" Lilliput
    Audigy 4 PCI card
    Seagate 300gb 3.5" HDD

    USB Devices:
    Powermate
    Bu-353 GPS mouse
    touchscreen

    Do I need to upgrade to the M2-ATX? Or does something seem amiss?
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    Asus P5N73-AN Mobo/Celeron E1400 2Ghz Dual Core CPU/2Gb GEIL PC3200/120GB HDD/DSATX PS/8" Phylon TS
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  2. #2
    Maximum Bitrate Snootch's Avatar
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    Just found the EpiaCenter calculator, and with 3 USB devices, the HDD, and one TV card (for the PCI sound card), the total power used comes to 78.13 watts at DVD playback loads. Add the 7 watts that my Lilliput draws, and that makes the total 85.13 watts. I'm sure at start-up there is just as much power being drawn if not more than when video is being played. I think that this is probably my problem. Anyone want to buy an M1-ATX?
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    Asus P5N73-AN Mobo/Celeron E1400 2Ghz Dual Core CPU/2Gb GEIL PC3200/120GB HDD/DSATX PS/8" Phylon TS
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  3. #3
    Variable Bitrate 12Vsystems's Avatar
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    The 12v rail is limited to I think to 2 amps. The 12v from the 3.5" drive makes me think it might be overloaded.

    If so the M2-ATX will solve you problem
    Spent all my money on carputers now I have to work a real job.
    http://www.858graphics.com

  4. #4
    Variable Bitrate 12Vsystems's Avatar
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    save the M1 you will find a use for in the future


    it will make a good voltage regulator for a 15" screen or you could make a relay setup using the ps-on fuction.
    Spent all my money on carputers now I have to work a real job.
    http://www.858graphics.com

  5. #5
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    Man! That calculator is great!

  6. #6
    Variable Bitrate
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    Quote Originally Posted by Snootch
    Just found the EpiaCenter calculator, and with 3 USB devices, the HDD, and one TV card (for the PCI sound card), the total power used comes to 78.13 watts at DVD playback loads. Add the 7 watts that my Lilliput draws, and that makes the total 85.13 watts. I'm sure at start-up there is just as much power being drawn if not more than when video is being played. I think that this is probably my problem. Anyone want to buy an M1-ATX?
    Cool idea, but that calc is missing some major power drainers like the motherboard and memory, which is at least another 50 or so watts. It's also missing soundcard, although the TV tuner looks like a decent sub. The power draw is also on the way low side and he is not adding any safety zone. The breakdown he has is very good, though and easy to use - I wish there was a modern one that easily did it.

    There are also good:
    http://forums.extremeoverclocking.co...43&postcount=1
    I like mnemonik's, but the JS one gives you a breakdown of each component. I still use 8w per 128MB, like one mentioned in the past. I think it's more realistic.
    Audio: 4 * Rainbow Audio Germs + Infinity Basslink / Case: iStarUSA S3 / CPU: C2D P8700 / MB: Jetway NC64-LF / SC: ASUS Xonar Essence STX / RAM: Crucial 2x1GB 1066MHz / HD: MTRON 2.5" 30GB / DVD: Panasonic UJ-815B / PSU: Opus 180w / LCD: Xenarc 700TSV

  7. #7
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    you choose the motherboard at the top, and i'm sure they've included power for the motherboard in their calculations as well as a stick of RAM and the onboard cpu and onboard sound.

    Snootch - I am running a MII12000, 200 GB 3.5" Seagate baracuda plus, 8" touchscreen, usb gps, usb mouse, usb slimline slot load dvd & cd-rw, and sometimes i have a few extra usb devices plugged in (usb sound card, all in wonder remote, d-link radio) and i have had no power issues, all with a m1-atx. Not exactly the same spec, but similar. The hard drive is definately the most power hungry device, not sure there will be too much difference between a 200 and a 300 gb device tho.
    Hardware: MII12000/512MB RAM/250GB HDD/8" touchscreen/slot load dvd/M1-ATX, 802.11g/bluetooth
    Software: Road Runner, Map Monkey

    Working on: reliablility!

  8. #8
    Variable Bitrate
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    Quote Originally Posted by RichEO
    you choose the motherboard at the top, and i'm sure they've included power for the motherboard in their calculations as well as a stick of RAM and the onboard cpu and onboard sound.
    Not possible they included RAM usage, because the power varies depending on the size and it should be far more than that. They did include mobo usage, my bad, but the EPIA calc is still severely "generous." 2.5w per USB device? 4.9w for a TV tuner? Don't rely on that one.
    Audio: 4 * Rainbow Audio Germs + Infinity Basslink / Case: iStarUSA S3 / CPU: C2D P8700 / MB: Jetway NC64-LF / SC: ASUS Xonar Essence STX / RAM: Crucial 2x1GB 1066MHz / HD: MTRON 2.5" 30GB / DVD: Panasonic UJ-815B / PSU: Opus 180w / LCD: Xenarc 700TSV

  9. #9
    Maximum Bitrate Snootch's Avatar
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    Quote Originally Posted by RichEO
    you choose the motherboard at the top, and i'm sure they've included power for the motherboard in their calculations as well as a stick of RAM and the onboard cpu and onboard sound.

    Snootch - I am running a MII12000, 200 GB 3.5" Seagate baracuda plus, 8" touchscreen, usb gps, usb mouse, usb slimline slot load dvd & cd-rw, and sometimes i have a few extra usb devices plugged in (usb sound card, all in wonder remote, d-link radio) and i have had no power issues, all with a m1-atx. Not exactly the same spec, but similar. The hard drive is definately the most power hungry device, not sure there will be too much difference between a 200 and a 300 gb device tho.
    I am running 512Mb of RAM , and am using an un-powered USB hub though, I don't know if that makes much of a difference. I have confirmed that it is a power problem at startup... If I get stuck on "Detecting IDE drives", I can shut the computer off, pop the fuse out of thr Lilliput "egg", restart it, and plug the fuse back in after about 10 seconds. The screen comes on, and it detects the drives with no problem. So this leads me to believe the problem stems from the M1-ATX being unable to provide everything (especially the HDD) with the necessary current at start-up.
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  10. #10
    MySQL Error Scouse Monkey's Avatar
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    Quote Originally Posted by WiCKeD 5.9L
    Not possible they included RAM usage, because the power varies depending on the size and it should be far more than that. They did include mobo usage, my bad, but the EPIA calc is still severely "generous." 2.5w per USB device? 4.9w for a TV tuner? Don't rely on that one.
    generous in what way? 2.5W is the most any usb powered device can draw. (500mA @ 5V). some devices such as drives will use this on startup so it is best to assume the worst case.

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