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  1. #1
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    Crosshair 8 Dark Hero with 2x M.2 drive and 3090 GPU: PCIe impact?

    Hi

    I am planning to install 2x M.2 drive and 3090 GPU. It is not clear in the user manual if the M.2 drives will use PCIe lanes and if the GPU will stay at x16 with 2 drives installed...

    Does anyone know more about that?

    Idea was to set the two M.2 drives in Raid 0 but don't want to see the GPU goes from x16 down to x8...

    Thanks

  2. #2
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    I do have 2x M.2 0 Raid and 3090 GPU it works perfect no Problem

  3. #3
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    Quote Originally Posted by Darox View Post
    I do have 2x M.2 0 Raid and 3090 GPU it works perfect no Problem
    Thx for the reply! Can you confirm that both of your M.2 are PCIe 4 devices and that your 3090 still runs at x16 and not x8?

  4. #4
    ROG Guru: Yellow Belt Array Baio73 PC Specs
    Baio73 PC Specs
    MotherboardAsus ROG Crosshair VIII Extreme BIOS 0606
    ProcessorAMD Ryzen 5900X
    Memory (part number)2x16Gb Corsair Dominator 3600 CAS14
    Graphics Card #1AMD RX 6900 XT
    MonitorLG 34GK950F
    Storage #1Samsung 980PRO 512Gb NVMe
    Storage #2WD Black SN850 2Tb NVMe
    CPU CoolerCorsair H150i Elite Capellix
    CaseLian Li 011D XL
    Power SupplyAsus Thor 1200P
    Keyboard Logitech G513
    Mouse Logitech ProX Superlight + Powerplay
    Headset G933 Artemis Spectrum
    Mouse Pad Corsair MM 700 RGB
    Headset/Speakers Logitech G560
    OS Windows 11 64bit
    Network RouterLynksys EA6500
    Accessory #1 Corsair Commander Pro XT
    Accessory #2 10xCorsair QL120 RGB fan

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    Samsung 980Pro + WD Black SN850 + 5700XT, all running fine @4x on my Crosshair VII Formula.

    Baio
    CASE Lian Li 011D XL CPU AMD Ryzen 5900X COOLER Corsair H150i Elite Capellix MOBO Asus ROG Crosshair VIII Extreme RAM 2x16Gb Corsair Dominator 3600 CAS14 PSU Asus Thor 1200P VGA AMD RX 6900 XT DISPLAY LG 34GK950GF AUDIO Logitech G560 SDD Samsung 980PRO 512Gb NVMe - Seagate FireCuda 530 NVMe 1Tb - WD Black SN850 2Tb NVMe NPUT Logitech ProX Superlight + Powerplay + Corsair MM700 RGB - G513

  5. #5
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    Quote Originally Posted by Baio73 View Post
    Samsung 980Pro + WD Black SN850 + 5700XT, all running fine @4x on my Crosshair VII Formula.

    Baio
    Thx! And 5700 still at x16 ? Cheers

  6. #6
    ROG Guru: Yellow Belt Array Baio73 PC Specs
    Baio73 PC Specs
    MotherboardAsus ROG Crosshair VIII Extreme BIOS 0606
    ProcessorAMD Ryzen 5900X
    Memory (part number)2x16Gb Corsair Dominator 3600 CAS14
    Graphics Card #1AMD RX 6900 XT
    MonitorLG 34GK950F
    Storage #1Samsung 980PRO 512Gb NVMe
    Storage #2WD Black SN850 2Tb NVMe
    CPU CoolerCorsair H150i Elite Capellix
    CaseLian Li 011D XL
    Power SupplyAsus Thor 1200P
    Keyboard Logitech G513
    Mouse Logitech ProX Superlight + Powerplay
    Headset G933 Artemis Spectrum
    Mouse Pad Corsair MM 700 RGB
    Headset/Speakers Logitech G560
    OS Windows 11 64bit
    Network RouterLynksys EA6500
    Accessory #1 Corsair Commander Pro XT
    Accessory #2 10xCorsair QL120 RGB fan

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    Quote Originally Posted by PhilK View Post
    Thx! And 5700 still at x16 ? Cheers
    Yes of course... forgot to write it.

    Baio
    CASE Lian Li 011D XL CPU AMD Ryzen 5900X COOLER Corsair H150i Elite Capellix MOBO Asus ROG Crosshair VIII Extreme RAM 2x16Gb Corsair Dominator 3600 CAS14 PSU Asus Thor 1200P VGA AMD RX 6900 XT DISPLAY LG 34GK950GF AUDIO Logitech G560 SDD Samsung 980PRO 512Gb NVMe - Seagate FireCuda 530 NVMe 1Tb - WD Black SN850 2Tb NVMe NPUT Logitech ProX Superlight + Powerplay + Corsair MM700 RGB - G513

  7. #7
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    Quote Originally Posted by Baio73 View Post
    Yes of course... forgot to write it.

    Baio
    This is great! Thanks. Appreciated

  8. #8
    ROG Enthusiast Array polyh3dron PC Specs
    polyh3dron PC Specs
    MotherboardAsus ROG Crosshair VIII Dark Hero X570
    ProcessorAMD Ryzen 9 5950X
    Memory (part number)G.Skill Trident Z Neo F4-3600C14Q-64GTZN
    Graphics Card #1Nvidia Geforce RTX 3090 Founder's Edition
    Sound CardAvid Pro Tools MTRX Studio w/ Pro Tools HD Native Card
    MonitorAsus ROG Swift PG27UQ
    Storage #1Sabrent Rocket 4.0 2TB x2 in RAID 0 Config
    Storage #2WD Black 6TB HDD
    CPU CoolerEK Water Blocks Custom Loop
    CaseLian Li O11D XL
    Power SupplySeasonic Prime PX-1000
    Keyboard Das Keyboard 4 Professional
    Mouse Steelseries Sensei
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    OS Windows 10 Pro
    Network RouterEero Pro

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    Quote Originally Posted by PhilK View Post
    Hi

    I am planning to install 2x M.2 drive and 3090 GPU. It is not clear in the user manual if the M.2 drives will use PCIe lanes and if the GPU will stay at x16 with 2 drives installed...

    Does anyone know more about that?

    Idea was to set the two M.2 drives in Raid 0 but don't want to see the GPU goes from x16 down to x8...

    Thanks
    Typing from a computer that has this exact setup. GPU-Z reports my 3090 as PCIe x16 4.0

    That's that great thing about X570 boards.

  9. #9
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    There are 4 lanes dedicated to one m.2 slot from the CPU and 4 lanes to the chipset, which has the other m.2 slot. Neither takes lanes from the 16 dedicated to GPU or similar. Get about 5gb/s read on both m.2 drives (max for the drives) and about the same performance regardless of if it is going through the chipset or direct. GPU sits at 16 lanes.

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