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Thread: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??




  1. #1
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    Default MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    Greetings -

    I own an MA785GMT-UD2H board.

    I recently upgraded my CPU to a Phenom II X6 1090T,
    installed the v9 BIOS, and added two sticks of 4GB RAM --
    Corsair CML8GX3M2A1600C9.

    By default, the RAM ran at 1333, so I increased the multiplier from 6 to 8,
    after which the RAM ran at the spec'd 1600.

    However, for reasons that elude me, board is powering the RAM at 1.6v,
    as opposed to the spec'd 1.5v.

    The BIOS appear to allow one only to increase the DRAM voltage.

    Is there a way to lower the DRAM voltage to 1.5v?

    Insight welcome.

    Thanks,

    - Richard

    P.S. - If it helps, here are two images -- one with the PC at idle,
    and one under load (with turbo kicked in -- 18 multiplier).



  2. #2
    Chike is offline Senior Member
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    Default Re: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    Quote Originally Posted by expatCanuck View Post
    The BIOS appear to allow one only to increase the DRAM voltage.
    How come? It should let you set whichever value you desire.
    Post a screen capture of CPU-Z Memory and SPD tab (you can run multiple instanses of CPU-Z)

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    Default Re: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    Thanks for the speedy reply.

    Okay - here's the CPUID-Z info (and as you can see, both DRAM sticks are the same, but for the serial #.


    and as far as the BIOS goes, you can see that I can undervolt the CPU:


    but when I access the DDR voltage control, only an increase of voltage is offered:


    Am I missing something?

  4. #4
    Chike is offline Senior Member
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    Default Re: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    What settings do you use now, auto or normal? Nornal should be 1.5.


    EDIT: Note the loosened timinsg set by auto (11-11-11-29), you need to set them manually too.
    Any particular reason you set negative voltage for CPU and CBU/NB or is it just for the illustration?
    Last edited by Chike; 09-19-2011 at 06:49 AM.

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    Default Re: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    Quote Originally Posted by Chike View Post
    What settings do you use now, auto or normal? Nornal should be 1.5.
    Normal. Which is why I'm confused that it's at 1.6v.

    Quote Originally Posted by Chike View Post
    EDIT: Note the loosened timinsg set by auto (11-11-11-29), you need to set them manually too.
    Tightened.


    Quote Originally Posted by Chike View Post
    Any particular reason you set negative voltage for CPU and CBU/NB or is it just for the illustration?
    I intentionally undervolted the CPU & NB so they'd run a bit cooler, allowing the fans to run a bit slower, keeping the system quieter.

    At least, that's the theory.
    Last edited by expatCanuck; 09-19-2011 at 07:23 AM.

  6. #6
    Chike is offline Senior Member
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    Default Re: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    They may run cooler but it seems cool enough as it is. Anyway as long the system is stable there is no problem.

    I can understand if auto set it 1.6, but normal should have set it to 1.5, especially when the board only have positive offsets for DDR3 voltage.
    I'd open a ticket with GB supprt about this.

  7. #7
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    Default Re: MA785GMT-UD2H RAM running at 1.6v -- can I fix it ??

    Quote Originally Posted by Chike View Post
    ... I can understand if auto set it 1.6, but normal should have set it to 1.5, especially when the board only have positive offsets for DDR3 voltage.
    I'd open a ticket with GB supprt about this.
    Agreed. I created a message on their board. Interested in hearing what they have to say.

    Thanks very much for your guidance.

    - Richard

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