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  1. #1
    ROG Enthusiast Array Crash55 PC Specs
    Crash55 PC Specs
    MotherboardRampage V Edition 10
    ProcessorCore i7-6850K
    Memory (part number)G.Skill F4-3200C14Q-64GTZSW
    Graphics Card #1EVGA GTX 1080 FTW
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    ASUS Rampage V10 Edition - PCI Configuration Question

    Before I buy this board I want to ensure I get the components / configuration.

    I want to run two GTX 1080's and an NVMe drive. i7-6850k so a 40 lane CPU

    According to page 1-8 of the manual I should place the GPU's in slots PCIEX16/X8_1 and PCIEX16/X8_3 so both run at x16.

    The question how do I handle the NVMe drive. I would prefer the Intel 750 drive since it is available in 1.2TB size.
    This drive is available as a PCIe or U.2 drive. Which format should I get so that the GPU's still run at x16 or is that not even possible?
    Looking at the threads it appears that if i place it in slot PCIEX8_4 it causes issues and if I use the U.2 slot it also turns on the M.2 slot which drops slot 1 to x8.
    Is this true? Is it a design issue or something that will be fixed with a BIOS update?

    It appears though that if I buy a Samsung 950 and place it in the M.2 slot it won't effect the GPU's at all.

    What will the spacing be for the SLI connector on the GPU's? I want to buy a high speed bridge but need to know the spacing.
    Last edited by Crash55; 07-04-2016 at 09:36 PM.

  2. #2
    ROG Guru: Yellow Belt Array Onimax PC Specs
    Onimax PC Specs
    MotherboardRampage V Edition 10
    ProcessorIntel Core i7 6950X
    Memory (part number)G.Skill RipJaws V DIMM Kit 128GB, DDR4-3000, CL14-14-14-34 (F4-3000C14Q2-128GVKD)
    Graphics Card #1NVIDIA TITAN X (Pascal)
    Graphics Card #2NVIDIA TITAN X (Pascal)
    Monitor2* ASUS ROG Swift PG279Q
    Storage #1Samsung 950 Pro 512GiB
    Storage #2Samsung 850 Pro 1TiB
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    I am due to receiev my RV10 at the end of the week, but to my knowledge you should be ok with either configuration.

    Basically it all comes down to the CPU you plan on using.
    A 28 lane CPU will basically disable the u.2 slot and every other pcie slot than the ones with the gpus plugged into.
    With a 40 lane CPU you will have PCIEX8_4/m.2/u.2 available. However all these three connectors share their bandwidth so you can only utlize one at a time.
    So I would preferably go with the u.2 version of the 750 (cleaner approach imao) or an m.2 drive such as the 950 or sm961.
    (see Chapter 1-8 in the manual: http://dlcdnet.asus.com/pub/ASUS/mb/...738.1453579978) PCIE_

    For spacings see chapter 1-7 - there are basically 3 slots _between_ both cards.
    Last edited by Onimax; 07-04-2016 at 07:14 PM.

  3. #3
    untouched Array Praz's Avatar
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    Hello

    PCIe/M.2/U.2 lane configuration is dependent on the CPU used which you seem to have not included. PCIe spacing conforms to industry standards which is 20.3mm (0.800") center to center slot spacing.

  4. #4
    ROG Enthusiast Array Crash55 PC Specs
    Crash55 PC Specs
    MotherboardRampage V Edition 10
    ProcessorCore i7-6850K
    Memory (part number)G.Skill F4-3200C14Q-64GTZSW
    Graphics Card #1EVGA GTX 1080 FTW
    Graphics Card #2EVGA GTX 1080 FTW
    MonitorDell P2715Q
    Storage #1Intel 750 1.2 TB
    Storage #2Western Digital Black 2 TB
    CPU CoolerThermalright Le Grand Macho
    CasebeQuiet! Dark Base 900 Pro
    Power SupplyEVGA SuperNOVA 1200 P2
    Keyboard Logitech G11
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    Quote Originally Posted by Onimax View Post
    I am due to receiev my RV10 at the end of the week, but to my knowledge you should be ok with either configuration.

    Basically it all comes down to the CPU you plan on using.
    A 28 lane CPU will basically disable the u.2 slot and every other pcie slot than the ones with the gpus plugged into.
    With a 40 lane CPU you will have PCIEX8_4/m.2/u.2 available. However all these three connectors share their bandwidth so you can only utlize one at a time.
    So I would preferably go with the u.2 version of the 750 (cleaner approach imao) or an m.2 drive such as the 950 or sm961.
    (see Chapter 1-8 in the manual: http://dlcdnet.asus.com/pub/ASUS/mb/...738.1453579978) PCIE_

    For spacings see chapter 1-7 - there are basically 3 slots _between_ both cards.
    I am planing on buying the 6850K so a 40 lane CPU. I was leaning towards the U.2 version but some of the threads here say that it reduces the first slot to x8

  5. #5

  6. #6
    ROG Enthusiast Array Crash55 PC Specs
    Crash55 PC Specs
    MotherboardRampage V Edition 10
    ProcessorCore i7-6850K
    Memory (part number)G.Skill F4-3200C14Q-64GTZSW
    Graphics Card #1EVGA GTX 1080 FTW
    Graphics Card #2EVGA GTX 1080 FTW
    MonitorDell P2715Q
    Storage #1Intel 750 1.2 TB
    Storage #2Western Digital Black 2 TB
    CPU CoolerThermalright Le Grand Macho
    CasebeQuiet! Dark Base 900 Pro
    Power SupplyEVGA SuperNOVA 1200 P2
    Keyboard Logitech G11
    Mouse Logitech G502 Proteus Core
    Mouse Pad Steel Series 4HD
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    Quote Originally Posted by Chino View Post
    You should have no problem with a 40 lane CPU.
    I know I should have no problem but in another thread someone said that using the U.2 slot also turned on the M2. and put the board into quad SLI mode so the PCIe slots went to x8. It almost seems like you only have 39 lanes available in reality

    I would like to confirm before dumping a lot of money into the setup.

  7. #7

  8. #8
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    Quote Originally Posted by Crash55 View Post
    I know I should have no problem but in another thread someone said that using the U.2 slot also turned on the M2. and put the board into quad SLI mode so the PCIe slots went to x8. It almost seems like you only have 39 lanes available in reality

    I would like to confirm before dumping a lot of money into the setup.
    You got bad information. I'm running the exact setup you are asking about (2x GTX 1080 and Intel 750 U.2 SSD) and both my cards are running at x16 and my U.2 is running at x4.

  9. #9
    ROG Enthusiast Array Crash55 PC Specs
    Crash55 PC Specs
    MotherboardRampage V Edition 10
    ProcessorCore i7-6850K
    Memory (part number)G.Skill F4-3200C14Q-64GTZSW
    Graphics Card #1EVGA GTX 1080 FTW
    Graphics Card #2EVGA GTX 1080 FTW
    MonitorDell P2715Q
    Storage #1Intel 750 1.2 TB
    Storage #2Western Digital Black 2 TB
    CPU CoolerThermalright Le Grand Macho
    CasebeQuiet! Dark Base 900 Pro
    Power SupplyEVGA SuperNOVA 1200 P2
    Keyboard Logitech G11
    Mouse Logitech G502 Proteus Core
    Mouse Pad Steel Series 4HD
    Headset/Speakers Klipsch ProMedia Ultra 5.1
    OS Windows 10 Pro
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    Not sure how to link forums but I will try:

    Slot 4 issues: http://rog.asus.com/forum/showthread...w-GPU-Problems

    U.2 turning on M.2: http://rog.asus.com/forum/showthread...-PCIE-Question

    I also tried to bring up these issues in the main Edition 10 thread: http://rog.asus.com/forum/showthread...e-V-Edition-10

    Hopefully I am just missing something. I am OK with using the U.2 version of the Intel 750 but want to keep the GPU's at x16.

  10. #10
    ROG Enthusiast Array Crash55 PC Specs
    Crash55 PC Specs
    MotherboardRampage V Edition 10
    ProcessorCore i7-6850K
    Memory (part number)G.Skill F4-3200C14Q-64GTZSW
    Graphics Card #1EVGA GTX 1080 FTW
    Graphics Card #2EVGA GTX 1080 FTW
    MonitorDell P2715Q
    Storage #1Intel 750 1.2 TB
    Storage #2Western Digital Black 2 TB
    CPU CoolerThermalright Le Grand Macho
    CasebeQuiet! Dark Base 900 Pro
    Power SupplyEVGA SuperNOVA 1200 P2
    Keyboard Logitech G11
    Mouse Logitech G502 Proteus Core
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    Quote Originally Posted by mikeblunt2020 View Post
    You got bad information. I'm running the exact setup you are asking about (2x GTX 1080 and Intel 750 U.2 SSD) and both my cards are running at x16 and my U.2 is running at x4.
    Great. That makes me a lot happier. I tried asking this question several different ways but never came across anyone running SLI and a U.2 to confirm.

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