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Thread: FM2A85X Extreme4 Not detecting RAM Speed

  1. #1
    Anarchangel is offline Junior Member
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    Default FM2A85X Extreme4 Not detecting RAM Speed

    Hi all,

    Just replaced 4GB of older Kingston RAM with 8GB (2 x 4GB) Corsair Vengeance CMZ8GX3M2A1866C9B. All runs stable but the BIOS detects it as 1333. Have updated the BIOS to 1.7, no change.

    Am on Windows 7 (64-bit), the RAM is in slots A2 and B2 (as suggested by the manual), so should be running in dual channel.

    I wouldn't mind so much, but have an AMD APU A8-6600k, and apparently it's bottlenecked unless your RAM is running at 1866 or more, which this should be. I know for 4 modules, or different CPU's the speed can be reduced, but for this CPU, using 2 DIMM's, I should be able to get the full speed, right?

    Thanks,

    Mark.

  2. #2
    - wardog -'s Avatar
    - wardog - is offline Spam Killer
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    Default Re: FM2A85X Extreme4 Not detecting RAM Speed

    To run them at 1866 you either need to select an XMP profile in the BIOS or set them up manually.

    1333 is their default JEDEC speed so that they will boot on many machines w/o issues.
    #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 PSU Calculator found HERE to determine if it might be the PSU causing issues. I do(Lifetime PRO ver.) and will mention so if it is marginal for your build.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

    Mine: ASRock Z77 Extreme6, i7-3770K, 16GB F3-14900CL9D-8GBSR, Seasonic X-750 Gold, On-die HD 4000, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
    Hers: ASRock 990FX Extreme4, FX-4170, 16GB AE316G1601U2K, Seasonic X-650 Gold, Asus HD7770-2GD5, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
    Server 1: ASRock 990FX Extreme9, FX-8150, 32GB AE316G1601U2K, Seasonic X-750 Gold, IBM ServeRAID M1015, PowerColor AX5450 1GBK3-SH, Corsair H80i, Antec Spot Cool, Fractal Design XL R2
    Server 2: ASRock FM2A88X Extreme6+, A10-6800K, 16GB F3-17000CL11D-8GBXL, Seasonic SS-660XP2, Fractal Design Arc Midi R2

  3. #3
    Anarchangel is offline Junior Member
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    Default Re: FM2A85X Extreme4 Not detecting RAM Speed

    Thanks for the reply.

    Sorry for the ignorance, but how do I select an XMP profile?

    Also, by "set them up manually" do you mean via the OC'ing section of the UEFI? Tried that with the old RAM, which was 1600, and it didn't work.

  4. #4
    - wardog -'s Avatar
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    Default Re: FM2A85X Extreme4 Not detecting RAM Speed

    Look under Dram Timing Config and the XMP Profiles should be displayed there. You might on your mb change Auto to see them.
    #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 PSU Calculator found HERE to determine if it might be the PSU causing issues. I do(Lifetime PRO ver.) and will mention so if it is marginal for your build.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

    Mine: ASRock Z77 Extreme6, i7-3770K, 16GB F3-14900CL9D-8GBSR, Seasonic X-750 Gold, On-die HD 4000, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
    Hers: ASRock 990FX Extreme4, FX-4170, 16GB AE316G1601U2K, Seasonic X-650 Gold, Asus HD7770-2GD5, Corsair H80i, Antec Spot Cool, Fractal Design R4 Black Pearl w/Window
    Server 1: ASRock 990FX Extreme9, FX-8150, 32GB AE316G1601U2K, Seasonic X-750 Gold, IBM ServeRAID M1015, PowerColor AX5450 1GBK3-SH, Corsair H80i, Antec Spot Cool, Fractal Design XL R2
    Server 2: ASRock FM2A88X Extreme6+, A10-6800K, 16GB F3-17000CL11D-8GBXL, Seasonic SS-660XP2, Fractal Design Arc Midi R2

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