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Thread: Fatal1ty 990fx - crossfire r7 260x 2nd pcie slot not working




  1. #1
    Join Date
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    Default Fatal1ty 990fx - crossfire r7 260x 2nd pcie slot not working

    As per my specs attached, I am using ASROCK FATAL1TY 990FX PROFESSIONAL motherboard where I have issues with Crossfire setup.

    The 2nd PCIe slot doesnt work (named as PCIe_4) which is just below the master slow.

    I tried individual cards on this 2nd PCIe slot but still it doesnt work, I am running latest BIOS & the 2nd card is not detected.

    However, the most below PCIe slot works with Crossfire but the 3rd PCIe slot is running at 4x speed & on this setup, the system freezes after 1 min of runtime of games.

    I am doubting that the 2nd PCIe slot is faulty?

    ASROCK & Forum members pls help, how to run CF setup successfully? I do not find any CF options in UEFI bios menu too.

  2. #2
    Join Date
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    Washington, D.C.
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    Default Re: Fatal1ty 990fx - crossfire r7 260x 2nd pcie slot not working

    RMA board if you have faulty slots.

  3. #3
    ajcroteau is offline Junior Member
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    Default Re: Fatal1ty 990fx - crossfire r7 260x 2nd pcie slot not working

    Quote Originally Posted by monalac View Post
    As per my specs attached, I am using ASROCK FATAL1TY 990FX PROFESSIONAL motherboard where I have issues with Crossfire setup.

    The 2nd PCIe slot doesnt work (named as PCIe_4) which is just below the master slow.

    I tried individual cards on this 2nd PCIe slot but still it doesnt work, I am running latest BIOS & the 2nd card is not detected.

    However, the most below PCIe slot works with Crossfire but the 3rd PCIe slot is running at 4x speed & on this setup, the system freezes after 1 min of runtime of games.

    I am doubting that the 2nd PCIe slot is faulty?

    ASROCK & Forum members pls help, how to run CF setup successfully? I do not find any CF options in UEFI bios menu too.
    Do both cards work if you put either in the 1st PCIe slot? (Rule out it being a Video Card issue)

    - AJ

  4. #4
    Join Date
    Nov 2012
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    USA
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    2,675

    Default Re: Fatal1ty 990fx - crossfire r7 260x 2nd pcie slot not working

    You are enabling Crossfire in CCC, right?
    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
    ____If you are overclocking, underclocking, or undervolting any parts, informing us of this and their values would prove beneficial in helping you.

    #2 - G.Skill RAM Configurator for your boardSamsung Memory for your boardLatest AMD Chipset Drivers/WindowsLatest AMD Graphics Drivers/WindowsLatest Intel Drivers

    #3 - Please use the eXtreme Outer Vision Power Supply Calculator found HERE to determine if it might be your PSU at issue.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

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