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  1. #11
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    Hello Guys,

    i got the Maximus Extrem XI and put 2 SSD in the Dimm.2 Slot. I got on my GPU only x8 lanes. I think this Slot is usless if there is no chance to get x16 lanes.

  2. #12
    ROG Guru: Orange Belt Array rjbarker PC Specs
    rjbarker PC Specs
    MotherboardMaximus XI Extreme (BIOS 1503 to 1903)
    Processor9900K @ 5.1 Ghz w EK Velocity
    Memory (part number)32 GB -Dominator Platinum 3200 Mhz CAS 16
    Graphics Card #1Evga RTX 3080Ti FTW3 Ultra w FC EKWB
    Sound CardOnboard Realtek
    MonitorDell Alienware 34" Ultra wide 120Hz Gsync
    Storage #1Samsung 970 Pro 512G M.2 NNMe
    Storage #2Samsung 860 Pro 512G & 256G
    CPU CoolerEK Supremacy Copper w Nickel Plating
    CaseCorsair 900D
    Power SupplyCorsair AX 1600i
    OS W10 HP x64 - 21H1
    Accessory #1 480 * 360 * 240 XSPC Radiators (15 Fans) w 4 Channel 200W Fan Controller
    Accessory #2 XSPC Photon Rez / Vario Pump combo
    Accessory #3 Fesser Flex Tubing - Bits Power Fittings & EK SLi Terminal
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    Use the dedicated M.2 Slots that use the PCH ...the PCI-E Slots for GPU's are CPU only.....this is outlined within your manual. If you must use the DIMM Slot for your M.2 you will be limited to x8 on your single GPU or x4/x4 on a SLi set up.
    There is negligible difference in noticeable speeds with GPU's running x8 vs x16.....

    So its hardly "useless".....otherwise upgrade to a HEDT system which will provide you with more PCI-E Lanes at a premium price.

    This was already answered in detail within this Thread in Post #2
    Last edited by rjbarker; 01-10-2019 at 06:49 PM.

  3. #13
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    Quote Originally Posted by rjbarker View Post
    Use the dedicated M.2 Slots that use the PCH ...the PCI-E Slots for GPU's are CPU only.....this is outlined within your manual. If you must use the DIMM Slot for your M.2 you will be limited to x8 on your single GPU or x4/x4 on a SLi set up.
    There is negligible difference in noticeable speeds with GPU's running x8 vs x16.....

    So its hardly "useless".....otherwise upgrade to a HEDT system which will provide you with more PCI-E Lanes at a premium price.

    This was already answered in detail within this Thread in Post #2
    Hello everyone, I take advantage of this discussion because I have the same "problem". I have a maximus xi extreme with 8700K and 2 M2 Samsung 970Pro 512gb. From what I've read here, if I insert two ssd m2 into the DIMM2 adapter, my speed of the pci express slot will go from 16x to 8x, in the case of sli at 4x + 4x right? If instead I insert the two M2 on the motherboard slots, what speed limitations could I have in general? thank you very much to those who will answer me. Francis

  4. #14
    ROG Guru: Yellow Belt Array
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    When i istall only 1 nmve - where ist the best place to install it?

    (except the DIMM2 card).

  5. #15
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    Quote Originally Posted by Mappi75 View Post
    When i istall only 1 nmve - where ist the best place to install it?
    (except the DIMM2 card).
    Under the PCH, so that the NVME is completely covered by the thermal pad. (M.2_1)

    The installation there but made difficult.

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  6. #16
    ROG Guru: Yellow Belt Array
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    Thanks for helping me!

    M.2_1 is the place where i installed the Samsung 1TB 970pro - and you was right - its a little bit tricky to remove the cover ^^

  7. #17
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    Quote Originally Posted by Mappi75 View Post
    Thanks for helping me!

    M.2_1 is the place where i installed the Samsung 1TB 970pro - and you was right - its a little bit tricky to remove the cover ^^
    I'm about to install a 970 Pro 1Tb - so that spot for the Nvme m.2_1 on the bottom right is the best place to put it, not on the DIMM.2 slot if it's only 1 M.2 SSD?

  8. #18
    ROG Guru: White Belt Array
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    I just installed this mobo and I am scratching my head figuring out HOW TO MAKE USE of the beautiful DIMM.2 feature without loosing everything else.
    Asus you could have written a chapter in the Manual about this, not 1 line of telegraphic text
    """"Configuration options: PCIEX16_1 + PCIEX16_2 / DIMM.2_1 + PCIEX16_2 / DIMM.E_1 + DIMM.2_2"
    That's all...!

    No mention of other factors or combinations or effects of choices...

    For now I have put my INTEL 750 SSD PCIE card in PCIE16_3 slot at 4x (losing sata 5 and 6)

    I have of course a GPU in PCIE16.1 16X, and I'd like to know what happens if I put 1 or 2 SSDs in the DIMM.2 piece. I am about to experiment, but...! Asus one day will make useful user manuals, not just descriptive ones, I am sure!


  9. #19
    ROG Guru: White Belt Array
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    REsults

    I moved my PCIE SSD to PCIE slot 3 (4x, losing SATA 5and 6)

    Moved the 2 NVMe SSDs from under the southbridge headsink to the DIMM.2 and it works, albeit my Geforce card runs at 8x.

    this seems the most we can get from this platform. Performance wise good. "Normal" windows and office usage with x299 platform was underwelming. i9 9900 KS is brilliant here.

  10. #20
    ROG Guru: White Belt Array
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    BTW, moving the ssd's I removed the metal top of the PCH (below is another heatsink, not as big, but not small at all) and I don't feel like putting it back, it seems a useless thermal misconception. Without it THE pch is breathing freely, with more room for air circulation and the LED lights look different but cool enough...

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