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Thread: Gigabyte EX58-UD3R, 920@4.0ghz, mem@1200Mhz - want mem@1600Mhz




  1. #1
    Join Date
    Jul 2009
    Posts
    7

    Default Gigabyte EX58-UD3R, 920@4.0ghz, mem@1200Mhz - want mem@1600Mhz

    Specs:

    Gigabyte GA-EX58-UD3R rev 1.6 - Bios: FB
    Intel i7 920 @4.0Ghz with Thermolab BARAM cooler
    A-Data 6GB 1600Mhz RAM
    Gigabyte ATi Radeon 4890 @ 970/1150Ghz
    InWin 850W Commander

    All runs well, stable and cool. I used Gigabyte's guide to OC my 920 to 4.0Ghz: http://images.tweaktown.com/imageban...2.12_(ENG).pdf

    And it worked perfectly. However, my memory is running at 1200Mhz, I would like it to run at 1600Mhz. In the guide's after thought he says he managed to get his memory to 1600Mhz, he writes:

    "...raising the memory divider ratio to 8x, DDR3 will overclock to DDR3-1600MHz. Remember, raising the memory means we need to raise the Uncore frequency as well. In this case, I set the Uncore frequency to 3.4GHz and kept the same DDR3 voltage at 1.5V."

    I did this, but my machine won't start with the divider ratio at 8x and the Uncore at 3.4Ghz. Anyone have any ideas?

    QPI/Vtt voltage = 1.515v
    DRAM voltage = 1.60v

    According to the manufacturers website, the working voltage for my RAM is 1.65v-1.85v
    http://oc.adata.com.tw/1_product_det...id=AD31600GU3K

    I tried raising the DRAM voltage to 1.66v, 1.70v and 1.80v to no avail.
    Last edited by pulsenz; 08-05-2009 at 01:31 PM.

  2. #2
    Join Date
    Jul 2009
    Posts
    7

    Default Re: Gigabyte EX58-UD3R, 920@4.0ghz, mem@1200Mhz - want mem@1600Mhz

    Lowered the QPI to 1.295v.
    Changed the timings to 9-9-9-24.
    Changed the uncore to 3.2Ghz.

    And success!! Awesome.

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