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  1. #1
    ROG Enthusiast Array jasonvp PC Specs
    jasonvp PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel 7900X
    Memory (part number)Corsair CMK64GX4M8X4200C19 Vengeance LPX 64GB
    Graphics Card #1NVidia Titan X (Pascal)
    Graphics Card #2NVidia Titan X (Pascal)
    Sound CardSound Blaster ZxR
    MonitorAsus ROG PG27UQ, 2 x LG 4K/60Hz
    Storage #1Samsung 960 Pro 1TB
    Storage #2Samsung SM951 500GB M.2
    CPU CoolerCustom loop
    CaseCaseLabs Magnum THW10
    Power SupplyCorsair AX1500i
    Keyboard Unicomp USB Model M
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    Corsair CMK64GX4M8X4200C19 - XMP Not Working

    Hey folks -

    Now that I have the BIOS/lock-up issues behind me, I'm attempting to overclock the RAM. It's not going so well and I was curious if this is a known thing and I should just accept it for now? I have 64GB of Corsair CMK64GX4M8X4200C19, which is on the Asus QVL. When I enable XMP, the motherboard instantly does the right thing and tries to OC the memory to 4200MHz. But upon reboot, it never gets passed Code 80. That requires me to Safe Boot it and de-configure the XMP.

    Any suggestions? I'm a bit new to OC'ing memory. Processors I have no problems with but this is the first attempt I've ever made w/Asus QVL RAM and OC'ing it.

    Thanks!
    Last edited by jasonvp; 11-01-2017 at 10:29 PM. Reason: Fixed spelling
    System specs: click here.

  2. #2
    Banned Array JustinThyme PC Specs
    JustinThyme PC Specs
    Laptop (Model)G752VY-DH72
    MotherboardRampage VI Extreme
    ProcessorI9 9940X
    Memory (part number)64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17
    Graphics Card #1ASUS Strix 2080Ti O11G @ 2.1GHz
    Graphics Card #2ASUS Strix 2080Ti O11G @ 2.1Ghz
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    MonitorASUS PG348Q @ 100Hz
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    CPU CoolerHeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS
    CasePhanteks Enthoo Elite 8X LL120 PWM, 3X LL140 PWM, 12 SP120 PWM 1x AF140 PWM
    Power SupplyCorsair AX 1500i
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    I havent seen anyone running Vram at 4200 yet. a Few at 4000 and Im at 3800 which is full XMP for the kit CMD64GX4M8X3800C19
    Try setting XMP then scrolling down to the speed and backing off to say 3400 to start then work your way up.

  3. #3
    ROG Enthusiast Array jasonvp PC Specs
    jasonvp PC Specs
    MotherboardRampage VI Extreme
    ProcessorIntel 7900X
    Memory (part number)Corsair CMK64GX4M8X4200C19 Vengeance LPX 64GB
    Graphics Card #1NVidia Titan X (Pascal)
    Graphics Card #2NVidia Titan X (Pascal)
    Sound CardSound Blaster ZxR
    MonitorAsus ROG PG27UQ, 2 x LG 4K/60Hz
    Storage #1Samsung 960 Pro 1TB
    Storage #2Samsung SM951 500GB M.2
    CPU CoolerCustom loop
    CaseCaseLabs Magnum THW10
    Power SupplyCorsair AX1500i
    Keyboard Unicomp USB Model M
    Mouse Logitech G502
    Headset Sennheiser HD800
    Mouse Pad People actually still use mousepads?!
    OS Windows 10 Pro
    jasonvp's Avatar
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    4K MHz

    Quote Originally Posted by JustinThyme View Post
    Try setting XMP then scrolling down to the speed and backing off to say 3400 to start then work your way up.
    Thanks for the suggestion. So far, it seems to boot stably (fingers crossed) at 4000MHz, which ain't so bad. But I'm not calling this "done" yet; not till it's booted multiple times at that speed and no other issues pop up.
    System specs: click here.

  4. #4
    ROG Guru: Grand Master Array
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    Can't discard the possibility that you might have reached the limits of your CPU's IMC especially with 64GB of memory.

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