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  1. #1
    New ROGer Array pete_agreatguy PC Specs
    pete_agreatguy PC Specs
    MotherboardROG Crosshair Hero 7 (VII) x470
    ProcessorAMD Ryzen 3700X
    Memory (part number)F4-3600C16D-16GTZ (G Skill 2x8GB 3600MHz)
    Graphics Card #1EVGA GTX1080 SC GAMING 8GB (08G-P4-6183-KR)
    Sound Cardonboard
    MonitorSamsung S27D390 27"
    Storage #1Corsair MP510 480GB, Samsung 860 Evo 1TB
    Storage #2HGST 2TB, WD Gold 8TB
    CPU CoolerNoctua NH-D15S
    CasePhanteks Enthoo Pro TG
    Power SupplySeasonic FOCUS 850W Plat.
    Keyboard Zalman ZM-K300M
    Mouse Easterntimes Tech T7
    Headset Plantronics Gamecom 788
    Headset/Speakers Creative Inspire T10
    OS Windows 10 x64 Pro
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    Accessory #2 Canon MG5750 AIO wireless Printer
    pete_agreatguy's Avatar
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    Question Which M.2 slot should I install OS drive?

    Hi guys,

    New to M.2 (nvme).

    M/B = Asus Crosshair Hero 7 (VII) - latest firmware

    OS Storage = Corsair MP510, 480GB NVMe PCIe Gen3 x4 M.2 SSD

    Other Storage (all SATAIII):

    1x Samsung Evo 860, 1TB (gaming drive)
    1x HGST, HUS726020ALE610, 2TB (data drive)
    1x Western Digital GOLD, WD8002FRYZ-01FF2B0, 8TB (media drive)

    Am I correct that I should install the OS M.2 drive into the M.2_1 slot? And which, if any, SATA ports get disabled?

    I would obviously prefer it run in PCIe mode.

    In which case, are there any specific BIOS settings I need to change or will the BIOS default to PCIe?

    Thank you in advance for your aid
    Last edited by pete_agreatguy; 11-03-2019 at 07:39 PM.

  2. #2
    New ROGer Array
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    Good question. I came here looking for something else, but yesterday I actually happened to put an m.2 drive in the 2nd position. I did this because the heat sink that came with the drive was pretty poor and the MOBO had a good one for 2. Bet the Corsair one is better though.

    My guess is that at the same temperature 1 is better, but that if the data processor chip overheats and throttles it is worse.*

    Will be interested to hear if position 1 is better. My Motherboard Specs list them as the same. The top one is linked direct to the CPU. The bottom on mine goes via an X570 chip.

  3. #3
    ROG Guru: Brown Belt Array MrAgapiGC PC Specs
    MrAgapiGC PC Specs
    MotherboardAsus Maximus XI Code
    Processor9900K
    Memory (part number)CMK32GX4M4B3600C18
    Graphics Card #1STRIX-GTX1080ti-O8G-GAMING
    MonitorAOC AGON AG2701QX (2)
    Storage #1Samsung 960 EVO 256GB
    Storage #2Kingston Savage 500GB
    CPU CoolerNzxt X74 360mm AIO
    CaseNzxt H700
    Power SupplyEVGA 850 G2
    Keyboard Logitech G810
    Mouse Asus Spartha
    Headset Hyper X Cloud Revolver S
    Mouse Pad Hyper X Fury S 900mx420mm
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    MrAgapiGC's Avatar
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    i will recommend M2_1 just in case. the other info is called read the manual. check bios and look for x4 x2 m2_x if that is not there like the new bios of z390 is automatic.

    also check IF, since i do not have that board, if you use m2_1 sata port 1 is disable
    Learn, Play Enjoy!

  4. #4
    New ROGer Array pete_agreatguy PC Specs
    pete_agreatguy PC Specs
    MotherboardROG Crosshair Hero 7 (VII) x470
    ProcessorAMD Ryzen 3700X
    Memory (part number)F4-3600C16D-16GTZ (G Skill 2x8GB 3600MHz)
    Graphics Card #1EVGA GTX1080 SC GAMING 8GB (08G-P4-6183-KR)
    Sound Cardonboard
    MonitorSamsung S27D390 27"
    Storage #1Corsair MP510 480GB, Samsung 860 Evo 1TB
    Storage #2HGST 2TB, WD Gold 8TB
    CPU CoolerNoctua NH-D15S
    CasePhanteks Enthoo Pro TG
    Power SupplySeasonic FOCUS 850W Plat.
    Keyboard Zalman ZM-K300M
    Mouse Easterntimes Tech T7
    Headset Plantronics Gamecom 788
    Headset/Speakers Creative Inspire T10
    OS Windows 10 x64 Pro
    Accessory #1 Logitech G29, TrackIR Pro
    Accessory #2 Canon MG5750 AIO wireless Printer
    pete_agreatguy's Avatar
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    Hi,

    Thank you for your replies.

    I've decided to use m.2_1 slot (closest to chipset). Rather than under the GPU, for cooling purposes.

    This is the response I got from Asus customer support as they answered my query also

    Dear ASUS Customer,
    Thank you for contacting ASUS Support.

    No SATA ports will be disabled on this board when you install m.2 NVMe drive.
    You don't have to change any settings in the BIOS , the board should recognise the SSD automatically.

    Both m.2 slots support PCIe x4 drives so it is up to you choosing in which one to install it.

    If you have any other question feel free to contact us again.

    Kind regards,
    Rado_K
    Asus Customer Service

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