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Thread: Odd problem with 64GB in a Gigabyte board




  1. #1
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    Default Odd problem with 64GB in a Gigabyte board

    I'll start by saying that I'm sure this is not a G-Skill problem, but I hoped maybe you could shed some light on what's happening.

    I have a X79-UD5 with 8 x F3-14900CL10-8GBZL installed for a total of 64GB. This worked fine under Gigabyteís bios 13p. I recently updated to 13w and even though the bios states that the full 64GB is there, all my OS installs (Win 7, Linux, others) report 60GB. It seems the stick in slot 6 is reporting as 4GB.

    Gigabyte insists that itís my OS. Reverting back to 13p fixed it.

    Are there any bios settings I should look for that may cause such behaviour? The latest bios did fix a couple things and Iíd like to use it, but of course not at the expense of having memory problems (well, computer memory problems anyway.)

  2. #2
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Hi,

    Can you check the memory size in BIOS? Are you use single 64GB memory kit(8GB x8) or mix two or more memory kits at the same time?
    Please kindly provide full memory/CPU model if possible.

    Here is the screenshot for X79-UD5(13w) and everything is on the right track:
    Odd problem with 64GB in a Gigabyte board-capture-png
    Or you could take some screenshots and show us the problem.
    G.Skill Tech Support

  3. #3
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Hi Matt:

    Thanks for taking the time to test that.

    The 64gig is a matched set, purchased as a kit.

    I have attached two images (same layout as yours) one for 13p and one for 13w. As you can see, CPUZ reports the ram correctly, but Windows does not.

    The bios correctly shows 8 gig in each slot.

    All my various installs however all say that the RAM is 60 gigs. My (ahem) hackintosh boots and immediately tells me my ram is mismatched. The problem goes away with bios 13p.
    Attached Images Attached Images Odd problem with 64GB in a Gigabyte board-bios-13p-jpg 

  4. #4
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Oops, one attachment per post. Here's 13w
    Attached Images Attached Images Odd problem with 64GB in a Gigabyte board-bios-13w-jpg 

  5. #5
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Hi,

    As the attached files, please try to remove all of the memory modules, and switch all of the DIMMs.
    And we've try both 3930/3970 but couldn't seem the issue as yours, if remove/switch couldn't correct the issue,
    use the XMP settings and slightly raising VCCSA and VTT to about 1.200-1.250V for another try.
    G.Skill Tech Support

  6. #6
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Hi Matt

    No luck on all counts. Selecting either XMP profile, swapping all the ram sticks around, upping the voltage, no change.

  7. #7
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    Default Re: Odd problem with 64GB in a Gigabyte board

    I thought I'd add one more update before I go back to 13p.

    I had been looking in the MIT Status page in the bios for the ram specs. On that page the system reports 65536 ram, which is correct. On the system info page the ram is reported as 61440. Two different locations in the same bios reporting different ram. It must be a Gigabyte bug, though I can see that the ram in your machine appears to work fine. Is this a compatibility issue?

  8. #8
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Hi J Lamp,

    As your test results, i'll say that should be the BIOS compatibility issue, and the RAM should be fine.
    G.Skill Tech Support

  9. #9
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Thank you Matt!

    I've sent this problem back to Gigabyte. Your assistance in troubleshooting this has been considerably more helpful than Gigabyte's.

  10. #10
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    Default Re: Odd problem with 64GB in a Gigabyte board

    Hi,

    You're welcome, let us know if you have any other question about it, will do our best to assist you.
    G.Skill Tech Support

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