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  1. #1
    New ROGer Array Darkphibre PC Specs
    Darkphibre PC Specs
    MotherboardRampage V Edition 10
    Processori7-6950X @ 3.00GHz
    Memory (part number)G.SKILL Ripjaws V 128GB DDR4 3000 (PC4 24000)
    Graphics Card #1ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Graphics Card #2ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Graphics Card #3GeForce GTX 660
    MonitorAsus MX279-8
    Storage #1Plextor M8Pe M.2 2280 1TB NVMe
    CPU CoolerCorsair Hydro Series H115i
    CaseZalman H1
    Power SupplyCorsair AX1200i
    Keyboard DELL KS-3205
    Mouse Razor R.A.T. 9
    Headset Beyerdynamic DT 770 Pro
    OS Windows 10 Enterprise 1607

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    Oct 2016
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    Win10: 3rd graphics card goes missing?

    I've put together a bit of a beast for doing Photogrammetry (3D scene reconstruction with photographs). As this software is CUDA and CPU heavy, I want to continue to use my old GTX660 with the new dual GTX1080s. But when all three are installed, the GTX660 rarely shows up (maybe 1 in 20 boots).

    Power connections are fine, I've reseated the GPUs, I've tried isolating PCIe slots (love the DIP switch feature), I've tried changing slots around, I've tried it with and w/o SLI on the 1080s. Nothing seems to get the GTX660 to show consistently.

    One curiosity, is that in the BIOS it sees the GTX660, but doesn't provide any details (except that it's running at x8 speed). I don't know if that's because it's an older card, or if it's indicative of a real problem.

    At any rate, I've moved the card to my old box, and it works fine. So the card doesn't seem to be the issue.

    Any thoughts as to how to further diagnose the problem? Is this a known thing with Asus GTX cards? It's really hard to search for this particular problem, as I typically am finding SLI threads.


    Motherboard
    Rampage V Edition 10

    Processor
    i7-6950X @ 3.00GHz

    Memory (part number)
    G.SKILL Ripjaws V 128GB DDR4 3000 (PC4 24000)

    Graphics Cards
    ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Asus GeForce GTX 660 GK106

    Monitor
    Asus MX279-8

    Storage
    Plextor M8Pe M.2 2280 1TB NVMe

    CPU Cooler
    Corsair Hydro Series H115i

    Case
    Zalman H1

    Power Supply
    Corsair AX1200i

    Keyboard
    DELL KS-3205

    Mouse
    Razor R.A.T. 9

    Headset
    Beyerdynamic DT 770 Pro

    OS
    Windows 10 Enterprise 1607

  2. #2
    ASUS HQ Service Rep Array
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    May 2016
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    Have tried using different model for 3rd graphics e.g AMD radeon to identify
    make sure with other graphic card is workable

  3. #3
    ROG Enthusiast Array CMDRZOD PC Specs
    CMDRZOD PC Specs
    MotherboardRampage V Extreme
    Processori7 6950x 4.3Ghz 1.3V
    Memory (part number)Gskill Trident 32GB 3200Mhz 13-13-13-32 1.35V
    Graphics Card #1Aorus 1080Ti Extreme Waterblock Edition +50 Core +625 GDDR5
    Graphics Card #2Aorus 1080Ti Extreme Waterblock Edition +50 Core +625 GDDR5
    Graphics Card #3Aorus HB SLI Bridge RGB
    Sound CardOnboard Realtek HD Audio
    MonitorUN65HU9000 4k TV with SEK-3500
    Storage #1RAID 0 4x 4TB Seagate Blue SSHD
    Storage #2Intel 750 PCIE 1.2TB NVME
    CPU CoolerEK Monoblock
    CaseCaseLabs Magnum M10 Doublewide
    Power SupplyCorsair 1500Axi
    Keyboard Wireless Microsoft 3000v2
    Mouse Wireless Microsoft 3000v2
    Headset Astro Gaming A50 wireless
    Mouse Pad Minecraft pad!
    Headset/Speakers Logitech 5.1 THX 300 watt using optical output
    OS Win 10 64 FCU
    Network RouterAsus RT-AC66U Merlin FW
    Accessory #1 Club3D DP 1.2 to HDMI 2.0 Active converter for TV
    Accessory #2 Phanteks PWM Fan Controller x2
    Accessory #3 Upgraded OC Front panel

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    Likely A Windows Issue

    Did you try just one 1080 and the 660? I think what you're seeing here is a Nvidia driver limitation. The newer Win10 versions use WDDM 2.1, and I'm not sure the 660 conforms to that driver model. In the odd chance it is seen on boot by Windows, have you tested to see if CUDA works on the 660 while the 1080's are installed?

  4. #4
    ROG Enthusiast Array daddyd302 PC Specs
    daddyd302 PC Specs
    Laptop (Model)MSI GT73VR Titan SLI-212
    MotherboardAsus Maximus 10 Wi-Fi
    Processor8700K @ 5Ghz
    Memory (part number)Trident Z RGB
    Graphics Card #1EVGA 1080ti SC2
    Graphics Card #2EVGA 1080ti SC2
    Sound CardSoundblaster XAE-5
    MonitorSony 900E
    Storage #1Crucial MM300 1TB
    Storage #2Seagate Barricuda Pro 8TB
    CPU CoolerTT Floe 280
    CaseTT View 71
    Power SupplyEVGA 1000 P2
    Keyboard Corsair K95 RGB
    Mouse Logitech 903
    Headset Beyerdynamic MMX300
    Mouse Pad Corsair MM200
    Headset/Speakers Edifier R1850DB
    OS Windows 10 Pro
    daddyd302's Avatar
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    Quote Originally Posted by Darkphibre View Post
    I've put together a bit of a beast for doing Photogrammetry (3D scene reconstruction with photographs). As this software is CUDA and CPU heavy, I want to continue to use my old GTX660 with the new dual GTX1080s. But when all three are installed, the GTX660 rarely shows up (maybe 1 in 20 boots).

    Power connections are fine, I've reseated the GPUs, I've tried isolating PCIe slots (love the DIP switch feature), I've tried changing slots around, I've tried it with and w/o SLI on the 1080s. Nothing seems to get the GTX660 to show consistently.

    One curiosity, is that in the BIOS it sees the GTX660, but doesn't provide any details (except that it's running at x8 speed). I don't know if that's because it's an older card, or if it's indicative of a real problem.

    At any rate, I've moved the card to my old box, and it works fine. So the card doesn't seem to be the issue.

    Any thoughts as to how to further diagnose the problem? Is this a known thing with Asus GTX cards? It's really hard to search for this particular problem, as I typically am finding SLI threads.


    Motherboard
    Rampage V Edition 10

    Processor
    i7-6950X @ 3.00GHz

    Memory (part number)
    G.SKILL Ripjaws V 128GB DDR4 3000 (PC4 24000)

    Graphics Cards
    ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Asus GeForce GTX 660 GK106

    Monitor
    Asus MX279-8

    Storage
    Plextor M8Pe M.2 2280 1TB NVMe

    CPU Cooler
    Corsair Hydro Series H115i

    Case
    Zalman H1

    Power Supply
    Corsair AX1200i

    Keyboard
    DELL KS-3205

    Mouse
    Razor R.A.T. 9

    Headset
    Beyerdynamic DT 770 Pro

    OS
    Windows 10 Enterprise 1607
    https://www.youtube.com/watch?v=TCCEBfoUUPU
    Main
    **Intel 8700K @ 5Ghz**Asus Maximus 10 Wi-Fi ** EVGA 1080ti SC2 SLI**SoundblasterX AE-5**G. Skills Trident RGB 16G**Crucial MX300 1TB**Seagate Barracuda Pro 8TB**Thermaltake View 71**EVGA 1000 P2**Sony 900E**Corsair K95 RGB**Logitech G903**
    Backup
    **Intel 6850K @ 4.4Ghz**Asus Rampage V 10**Asus Strix 1080 SLI**Soundblaster Z**Corsair Vengeance LED 32G**Crucial Mx300 1TB**Seagate Barracuda 8TB**Corsair 570X**Corsair H100i**Corsair HX 1000i**Sony 800E**Corsair K70 RGB**Logitech G900**

  5. #5
    New ROGer Array Darkphibre PC Specs
    Darkphibre PC Specs
    MotherboardRampage V Edition 10
    Processori7-6950X @ 3.00GHz
    Memory (part number)G.SKILL Ripjaws V 128GB DDR4 3000 (PC4 24000)
    Graphics Card #1ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Graphics Card #2ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Graphics Card #3GeForce GTX 660
    MonitorAsus MX279-8
    Storage #1Plextor M8Pe M.2 2280 1TB NVMe
    CPU CoolerCorsair Hydro Series H115i
    CaseZalman H1
    Power SupplyCorsair AX1200i
    Keyboard DELL KS-3205
    Mouse Razor R.A.T. 9
    Headset Beyerdynamic DT 770 Pro
    OS Windows 10 Enterprise 1607

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    Quote Originally Posted by daddyd302 View Post
    Well, I wasn't planning on throwing the 660 as an SLI with the 1080s.

    NVidia supports having two SLI'd 1080s and a third graphics card as the PhysX CUDA, so my setup should work? And regardless, even without *any* SLI, the third card isn't showing up... all the time (it shows up every 10-ish boots).

  6. #6
    ROG Guru: Yellow Belt Array Legolas PC Specs
    Legolas PC Specs
    MotherboardMaximus X Hero Wifi AC
    ProcessorIntel Core i7 8600k oc 5Ghz
    Memory (part number)Samsung DDR4 16GB
    Graphics Card #1ASUS NVIDIA GTX 1080
    MonitorASUS MS246
    Storage #1Samsung MZVPV256
    Storage #2Samsung MZVPV256
    CPU CoolerCorsair H110I v2
    Power SupplyPC 1200W Turbo-Cool 1200
    Keyboard ASUS SK2045

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    I think you put your 660 in the PCIEX8_4, because it shares bandwidth with Plextor M8Pe M.2 2280 1TB NVMe, that is why you losing 660.
    Please use PCiEX16_3 for the third PCI card. Do not do SLI on third card also. Just SLI for the 2 1080. Also, another thing, take out the 660 card and put it back in and make sure it is installed correctly. You will get have stable 660 card.

  7. #7
    New ROGer Array Darkphibre PC Specs
    Darkphibre PC Specs
    MotherboardRampage V Edition 10
    Processori7-6950X @ 3.00GHz
    Memory (part number)G.SKILL Ripjaws V 128GB DDR4 3000 (PC4 24000)
    Graphics Card #1ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Graphics Card #2ASUS ROG GeForce GTX 1080 STRX-GTX1080-A8G-GAMING
    Graphics Card #3GeForce GTX 660
    MonitorAsus MX279-8
    Storage #1Plextor M8Pe M.2 2280 1TB NVMe
    CPU CoolerCorsair Hydro Series H115i
    CaseZalman H1
    Power SupplyCorsair AX1200i
    Keyboard DELL KS-3205
    Mouse Razor R.A.T. 9
    Headset Beyerdynamic DT 770 Pro
    OS Windows 10 Enterprise 1607

    Join Date
    Oct 2016
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    Quote Originally Posted by Legolas View Post
    I think you put your 660 in the PCIEX8_4, because it shares bandwidth with Plextor M8Pe M.2 2280 1TB NVMe, that is why you losing 660.
    Please use PCiEX16_3 for the third PCI card. Do not do SLI on third card also. Just SLI for the 2 1080. Also, another thing, take out the 660 card and put it back in and make sure it is installed correctly. You will get have stable 660 card.

    Nope, it was in PCIEX8_3 (though I did try 4, risking a downgraded M.2 experience). It wasn't SLIed with the 1080s. Tried with 1080s SLI'd and no cards SLI'd. Finally just put it back in the old computer where it's been happy every since. :/

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