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  1. #1
    ROG Junior Member Array
    Join Date
    Sep 2013
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    WD Black SN850 500GB in M.2_1 slot not running at PCIe Gen 4 on Strix x570i

    Hi,

    I have a new build with a WD Black SN850 500GB and a Strix x570i Gaming AC mobo. I'm running 3603 Bios (latest non-beta). I do have Gen 4 set in the M.2_1 link bios setting, but it's still just connecting at Gen 3 according to the WD Black Dashboard plus I'm only getting 3700 MB/s in CrystalDiskMark just to confirm.

    Is there something I'm missing? or is this a bug with the bios? or maybe this SSD is not supported by ASUS.

    Thanks for the help.
    G
    Core i7 - 3820
    Corsair H70 water cooler
    EVGA GTX 680
    ASRock Extreme6/GB
    Intel Cherryville 128GB SSD
    Seagate MomentusXT 750GB
    16GB Samsung Ram 1600
    Thermaltake Grand 850w PSU
    corsair 300r Case
    Samsung BR Burner

  2. #2
    Mastermind19 Array
    Join Date
    Oct 2015
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    Hello Ginman522,

    I recommend test the WD850 on another slot to make sure it is not the drive having some issues.
    Did you try to reseat the M.2?
    WHat processor did you use?
    DId you try adjusting the M.2_1 link in bios (BIOS/Advanced/Onboard Devices Configuration -> M.2_1 link -> Gen 4) please?

    Please PM me for your specifications if you still have any problems.
    Have a wonderful day!

    Thomas
    Sincerely,
    TY

  3. #3
    New ROGer Array
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    Mar 2021
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    what cpu are you using on your x570 mobo?

  4. #4
    ROG Member Array neikosr0x PC Specs
    neikosr0x PC Specs
    Motherboardx570 Crosshair Dark Hero
    ProcessorRyzen 5900x
    Memory (part number)G.Skill 4000cl18 @ 3600 cl16
    Graphics Card #1Nvidia RTX 3080
    MonitorSamsung G7
    Storage #1Samsung Evo 970 Plus
    Storage #2Western Digital SN850
    CPU CoolerCorsair H115i RGB
    CasePhanteks P500A
    Power SupplyCorsair RM1000i
    Keyboard Corsair K70
    Mouse Corsair
    Headset JBL quantum 800
    Mouse Pad Asus ROG
    OS Windows 10 Pro

    Join Date
    May 2018
    Reputation
    10
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    12

    Quote Originally Posted by thomas_yiu@ROG View Post
    Hello Ginman522,

    I recommend test the WD850 on another slot to make sure it is not the drive having some issues.
    Did you try to reseat the M.2?
    WHat processor did you use?
    DId you try adjusting the M.2_1 link in bios (BIOS/Advanced/Onboard Devices Configuration -> M.2_1 link -> Gen 4) please?

    Please PM me for your specifications if you still have any problems.
    Have a wonderful day!

    Thomas
    I am having the same issue with the Dark Hero pro, on the latest Beta bios available. The SN850 doesn't work at full speed 7000/5000 but instead 6300/3200 when connected to the Chipset m.2 controller works fine on the CPU lane tho. x570 on a Asrock was fixed not long ago, so it might be something wrong with our chipset as well, my 2 nvme controllers are set to 4gen manually in bios. any ideas?

    Edit:
    Dark hero x570
    Ryzen 5900x

  5. #5
    Mastermind19 Array
    Join Date
    Oct 2015
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    Hi Neikosr0x,

    I am confirming with my engineers with the issue. Can you PM me with the feedback form, specifications and scrreenshot (hard drive read/write). More information the better. Thank you so much.
    Sincerely,
    TY

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