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Thread: M2-ATX (Maybe?)

  1. #1
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    M2-ATX (Maybe?)

    Ok, i've got some cash (but not loads) and wanted to get a DC-DC PSU to get me started with one of my low spec computers (less power requirement) that i've got hanging around. So, i looked in the MP3CAR store and found they are too expensive, but I can appreciate this as you will indefinately receieve better service and quality of parts. However, i've found on eBay an unofficial M2 claiming 150W: http://cgi.ebay.co.uk/Mini-ITX-M2-Ca...item1e59848945

    What are people's general opinions? I've read good reviews elsewhere on these eBay ones, but just wanted to see what the pro's thought.

    Many thanks,
    James

  2. #2
    FLAC
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    i would save up for the real thing. a bad power supply can ruin everything attached to it. if i just needed 100w dc for something like lights or something, im sure that generic one would be fine.. but for computers, dont skimp on the power supply- ever.

  3. #3
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    I thought i'd get that answer Do you know a rough guideline power consumption for your usual Intel ITX boards and maybe 3 usb devices + 1 hdd and + 1 DVD? I mean i can't see it being huge. I mean this is generally only to bench test a system with my custom front-end until i get a new car and maybe XPe. Means i can check the start-up and shutdown features.

  4. #4
    FLAC
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    If you are running a low power system, then the M2 should be fine. I wouldnt feel comfortable running anything over 50W off of the M2, since it has been known to take out the entire system when overloaded. Alot of people dont like the M-series power supplies because of this fact, but if you have everything setup properly then I wouldnt worry too much about it. My only complaint with the M2 is that the voltage on the +5v sags very easily. Adding a small wifi dongle to my USB hub drops the voltage by 0.1 on the +5v rail.

  5. #5
    FLAC
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    i agree, i had plenty of usb problems when i ran off motherboard ports. even if you just have a few usb devices, i strongly suggest building a powered usb hub...

  6. #6
    FLAC
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    My USB hub is powered off the 5v rail on the M2. If you have voltage problems like me using an M2, youll probably have to build an independent power source for the hub.

  7. #7
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    Sounds like i might be in for a ride then... What other power solutions are there? as i thought the M# series were standard for car installations. I was considering powering the drives (HDD/DVD) from a custom supply. Even with the USB devices, realistically i'm only then looking at about 40W for the setup running, if i power the HDD and DVD seperately. Thanks for your comments so far.

  8. #8
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    I don't know if your interested, but i noticed opus 180W psu's for sale on ebay for $50 buy it now. I read the seller's feedback, and all the psu's received good feedback. apparently for some reason he's selling about a hundred of them.
    just a thought. I just ordered a m2-atx from mo-co-so for only 69.99 though, i still didn't want the risk of a used product, even though opus has such a good rep. plus i'm only running a via cpu, so my power consumption will be very low!

  9. #9
    FLAC
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    Quote Originally Posted by james2k2 View Post
    Sounds like i might be in for a ride then... What other power solutions are there? as i thought the M# series were standard for car installations. I was considering powering the drives (HDD/DVD) from a custom supply. Even with the USB devices, realistically i'm only then looking at about 40W for the setup running, if i power the HDD and DVD seperately. Thanks for your comments so far.
    the m2 is fine. its not the 12v line thats a problem, because that power is fed directly to the devices. with the usb though, the motherboard handles that power, and if there is any overload or weirdness you get problems elsewhere on the motherboard. this is why its better to just build a seperate 5v supply to directly feed your usb devices... that way if one usb devices goes weird it wont effect the motherboard in a negative way.

  10. #10
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    I couldn't find the Opus ones you mentioned. Linky? I'm in the UK too btw, so hopefully shipping won't be too much.

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