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Thread: Can M2 handle Core i3 3225 ?

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    Maximum Bitrate jmullan99's Avatar
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    Can M2 handle Core i3 3225 ?

    So I received a brand new M2-ATX from Chris at Mo-Co-So. He's great to deal with.

    But I have issues (as so many have on the forums) where the supply starts, stops right away, then tries to start again, infinitely looping. This does not happen with my normal ATX supply on the bench. I am feeding the M2 with a 12V 5A bench supply.

    I just want to know if my board is within the specs of this power supply. I believe it should be.

    Intel Core i3 3225 (3rd gen Ivy Bridge) rated at 55W TDP. 4GB RAM. 60G SSD. That and the CPU fan are all that I am trying to power.

    That should be well within the 160W spec of the M2. Right?

    Assuming that it is, does anyone think the custom made firmware for this would solve the problem (if even still available)? I'm at a loss right now.

    Cheers,
    John
    Last edited by jmullan99; 07-15-2013 at 07:46 AM. Reason: Clarification
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    FLAC SNOtwistR's Avatar
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    Just a thought, did you try reversing the 2 pin cable that connects to mainboard power switch on B1 I think? sometimes that works. SNO

  3. #3
    Maximum Bitrate jmullan99's Avatar
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    Yes indeed I did try that. One of the many helpful hints from the forums
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    FLAC SNOtwistR's Avatar
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    How about setting up as a standard atx power supply and using a button to turn on computer, does that work that way using the M2? I had to do that one time to make the M2 work. Booted it up that way all night then changed wiring to have it auto start and it seemed to work fine after that. I personally have bought and tried them all and I still keep going back to the dsatx (it seems to be the most consistant, reliable, adjustable power supply out there). SNO

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    Maximum Bitrate jmullan99's Avatar
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    Yes, I tried dumb mode. With and without accessory line. Shorting the MB pins.

    I'm pretty sure it's an M2 issue. Just mostly looking for confirmation that it "should" handle the system I described.

    I may have to go with DSATX but need to try and fit it into my VoomPC case.
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    I've used an M2 with every thing from a Pentium DuoCore to an Ivy Bridge i5. Works like a champ with all of them. The only time I got myself in trouble was trying to overclock an early version of the i3 (before Sandy bridge). That proved to be very unstable. If you run the i3 stock, it will present no trouble at all for the M2.

    I HAVE had a a couple of flakey M2s straight out of the box. Never could get them to work correctly, and they exhibited the kind of behavior you describe. Firmware issue maybe...I don't know. I sent them back, got a replacement that worked, and never looked back.

  7. #7
    Maximum Bitrate jmullan99's Avatar
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    Thanks for that. As soon as I hear back from Chris I'll get myself an RMA# and try again.

    Cheers,
    John
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    John, I am using an M3 in a very similar situation and it works fine.

    Sandy Bridge i3 with 55w CPU (Intel Graphics 4000), 120gig SSD, 16gig ram and works fine. I haven't tried it in a car but it runs great off my RS 12volt supply. I have a switch in place to duplicate the ignition switch.

    The M3 is rated at 125 watts...

    My Mboard has built in video and audio and the M3 barely even gets warm after running for hours. If I recall everything in my machine rates in Win7 over a 7 other than the video which ranks in at 5.9. So it isn't slow...

    Also make sure your CPU is solidly in place and fan is secure.

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    It would most likely be the bench power supply to the m2. 12v at 5amps would not be enough. You would need at least 10 to 15amps for it to fire up correctly. 16v to 28v rated at 5amps would work but not 12v at 5amps. So try up the amps on the 12v to say 15 to 20amps. The pc uses the most power mainly when starting up and shutting down but once its running it generally uses less amps unless its doing something labour intensive.
    Your M2 PSU is fine so don't throw it out. It will easily handle your set up.
    Keep in mind the M2PSU will run on power between 8v-28v. But if trying to run it on 8v it will draw more amps like 20amps+ to work correctly and if your using say a 20v supply. It would only need to draw between 4-5 amps to run. So less power(V) the more amps it needs. More power(V) the less amps it needs
    Last edited by pcmoto.com.au; 07-22-2013 at 04:55 AM.

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    12 volts at 5 amps is 60 watts, which is greater than the TDP of the CPU...not that you'd ever likely hit that value. 45watts max at startup is my bet.

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