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Gigabyte GA-MA790GP-UD4H BIOS bug (warning)

Discussion in 'Motherboards & Memory' started by Meizuman, Feb 24, 2011.

  1. Meizuman

    Meizuman

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    Gigabyte GA-MA790GP-UD4H BIOS bug (RAM voltage warning)

    Hello all. I have used this mobo for long time now and have been quite pleased. But few months back I started noticing weird lagging, sudden stops, blue screens and just hard resets. The desktop icons for example took really long time to load, which I've read is an indicator of RAM problem (tight timings, not enough voltage etc.)

    I admit I have OC'd the hardware as hard as its able to go on air, but all temps and such have been in "safe" margins.

    As the problem got worse and ultimately lead to not being able to boot to windows, I started looking BIOS with an sharp eye. And there it was, on the hardware monitor section...
    RAM voltage 2.54 V!! And that means the mobo had been giving its maximum juice to my ram sticks for more than year and a half.

    As I have EPP capable sticks, and they require 2.2 V, I've set them to that value. But that seemed to throw the voltages to max.

    I started looking further, made annotation to one Finnish Gigabyte support forum about the subject (that Bios F7C grills ram sticks?). Then I tried different BIOS versions and they all had the same bug.

    The ram voltage bug is very much linked to all common settings in the "OC" section in BIOS. CPU NB ratio and voltage, CPU ratio and voltage, ram voltage... the bug seemed to appear when any of the values below were set. (-> means "or higher")

    CPU ratio: x14 ->
    CPU voltage: +0,125 (1,375V) ->
    NB ratio: x11 ->
    NB voltage: +0,050 (1,35V) ->
    RAM voltage: depending on other settings

    So I'm asking if anyone else has seen this kind of behaviour and if there is other people with the same problem. I think the problem may not be present on the newer Phenom II's but I would like people who have this mobo, to check their RAM voltage from bios or HWMonitor (voltage VIN1).

    I am not sure If my sticks are damaged, but after using them with normal voltages, I've still had some freezes and problems. :mad:

    EDIT: I tested with the 2 Dominator sticks only and the bug didn't appear. So the bug will only be present when all RAM slots are in use.
    Last edited: Feb 25, 2011
  2. robal

    robal

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  3. Meizuman

    Meizuman

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    Now it seems neither pair of RAM slots are working in dual channel anymore.

    Rig has gone to sh*t, bsod's, catalyst driver stops working all the time, sudden resets... you name it. Could faulty RAM/slots cause Catalyst issues?

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