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Thread: LN2-test: Asus Crosshair III Formula

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  1. #1
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    LN2-test: Asus Crosshair III Formula

    Hi,

    I got a retail version of Asus Crosshair III Formula motherboard fresh from production line. This motherboard is based on AMD 790FX chipset and should be optimized for extreme-overclocking. I tested it yesterday with 10 liters of LN2 and Phenom II X4 AM3 ES CPU.



    According to Asus: Crosshair III Formula is designed without any PCIEx lane switches which is a big advantage when you aim to have the best possible trace layout for performance, stability and overclockability. Trace optimization is a big part of this board as well as other ROG boards.

    I ran 3DMark05 and 3DMark06 with one and two ATI Radeon HD 4870 X2. Both cards were with default BIOS and stock cooling so I just adjusted clocks to 800/950 from CCC. Corsair Dominator DDR3-1866 C8 2 GB kit was running at 7-6-6-18 1T settings 900 MHz with 2,12V. No problems with memory (I used outer slots).











    ATI Radeon HD 4870 X2 CrossFireX (800/950):



    3DMark05 multicard: 46783 (#4 in hwbot)



    3DMark06 multicard: 35924 (#4 in hwbot)

    Both of the results are 2nd highest AMD scores just behind Kingpin.


    Some thoughts:

    - For some reason I was not able to get the system to boot NB @ 4,5 GHz at all so I had to run tests at ~4,275 GHz

    - TweakIt works great with keyboard. I was able to adjust Bus Speed during 3DMark06 precisely between 1 MHz intervals. TweakIt is more accurate than AMD's overdrive and helped me to finish 3DMark06 @ 6300 - 6244 MHz. I had to lower CPU clock for GT3 and GT4

    - This board definitely seems to be optimized for extreme-overclocking. System was stable @ 6,3 GHz for hours.. with M4A79T Deluxe system was stable closer to 6,2 GHz than 6,3 GHz

    - I ran completely out of LN2 40 seconds before GT4 ended when I was hunting down 36k Temperature dropped to -175C and 06 crashed 20 seconds before finishing the test. Despite not breaking 36k I'm pretty happy with the results
    Last edited by Sampsa; 05-23-2009 at 05:43 AM.
    Favourite game: 3DMark
    Work: Muropaketti.com - Finnish hardware site
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