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  1. #1
    ROG Enthusiast Array
    Join Date
    Jul 2013

    How to enable PCIe 4.0 on Maximus XII Extreme?

    Hey guys, just picked up my 11900k and under the PCIe setting I just see Gen 1,2, and 3? I was able to enable the Gen 4 for the video card slot?

  2. #2
    ROG Guru: Orange Belt Array Saltgrass PC Specs
    Saltgrass PC Specs
    MotherboardMaximus XIII Hero
    Processori9 11900K
    Graphics Card #1EVGA RTX 3090 FTW
    Sound CardOn Board
    MonitorDell AW3420DW
    Storage #1Samsung 980 Pro 2 TB
    Storage #2Samsung 860 Pro 1 TB
    CPU CoolerCooler Master Hyper 212X
    CaseCooler Master
    Power SupplyAntec HCP Platinum 1000
    Keyboard ASUS Strix Flare
    Mouse ASUS Chakram
    Headset/Speakers Logitech wired 5.1
    OS Win 10 Pro
    Network RouterROG Rapture GT-AX11000/AXE11000
    Accessory #1 VR Headset
    Accessory #2 Saitek X52

    Join Date
    Jan 2014

    I don't know about your board but only the PCIe16_1 and 2 were PCIe 4..

    After I set mine up, I decided to try the Z590.. If you have the 3DMark Benchmark, you might want to run the PCIe bandwidth test. I did not do that on mine because I wasn't aware it had that benchmark..

  3. #3
    ROG Guru: Orange Belt Array Legolas PC Specs
    Legolas PC Specs
    MotherboardMaximus X Hero Wifi AC
    ProcessorIntel Core i7 8600k oc 5Ghz
    Memory (part number)Samsung DDR4 16GB
    Graphics Card #1ASUS NVIDIA GTX 1080
    MonitorASUS MS246
    Storage #1Samsung MZVPV256
    Storage #2Samsung MZVPV256
    CPU CoolerCorsair H110I v2
    Power SupplyPC 1200W Turbo-Cool 1200
    Keyboard ASUS SK2045

    Join Date
    Nov 2015

    The PCIE slot runs at Gen 4 with 11900K with 2002 and later bios.
    You should run at PCIE 4.0. I agree, please run Furmark or 3Dmark and it will show it run at PCIE 4.0

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