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  1. #1
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    Crosshair VIII Formula PCIe

    Hello (excuse me for my poor english,i'm french)
    The first PCie is blocked by a Noctua NH-D15, so Noctua suggest to put a GTX 1080 Ti in the second PCIe slot.
    In this case, Is Formula give 0x/16x/4x or 0x/8x/4x. In other words, is the second slot alway wired in 8x or 16x ?
    Thanks

  2. #2
    New ROGer Array RedSector73 PC Specs
    RedSector73 PC Specs
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)PVR416G413C9K @ 3600 14-15-14-28 CR1
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
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    Page 1-8 of your manual at the top.

    The second will be will be x8 (which should be more than enough) the 2080ti does not come close to using that level of bandwidth.

    Only the first (x16_1) is x16 assuming one graphics card.
    Last edited by RedSector73; 12-09-2019 at 06:58 AM.

  3. #3
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    Thanks
    Page 1-8, i don't see the case : none on first.
    In PCIe 4.0, even if graphic card is gen 3, 8x has a level x16 bandwith gen 3.
    So my card gen3 on 8x gen4 is maybe on port 16x gen 3 ?

  4. #4
    New ROGer Array RedSector73 PC Specs
    RedSector73 PC Specs
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)PVR416G413C9K @ 3600 14-15-14-28 CR1
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
    CaseEVGA DG-87 Gunmetal Grey Gaming Case
    Power SupplyEVGA SuperNOVA G2 750W Gold Power
    Keyboard Corsair K95 RGB Platinum
    Mouse Corsair Gaming Sabre RGB Gaming Mouse
    Headset ARCTIS Pro Wireless
    Mouse Pad Cooler Master MP750 RGB Cloth Gaming Mouse Pad Extra Large
    OS Windows 10 64bit Pro
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    Here
    Click image for larger version. 

Name:	1-8.jpg 
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ID:	83354

    Top applies to your system since running a 3000 series CPU. Yes it will be GEN 3.0 because that is your graphics card (2080ti). Even if x8 x PCIE Gen 3.0 the 2080ti is not enough by itself to soak the bandwidth. Skipping to next PCIE (*may not even) fairly sure it does not effect x16, but if it does, it really does not matter.
    Last edited by RedSector73; 12-09-2019 at 09:55 AM.

  5. #5
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    thanks redsector73.
    Ok, i understand : no matter if 8x or 16x for the CG.
    thx

  6. #6
    New ROGer Array RedSector73 PC Specs
    RedSector73 PC Specs
    MotherboardROG CROSSHAIR VIII HERO (WI-FI)
    ProcessorAMD Ryzen 9 3900X 12-Core Processor
    Memory (part number)PVR416G413C9K @ 3600 14-15-14-28 CR1
    Graphics Card #1Gigabyte Aorus RTX 2080 Ti Xtreme WaterForce (GV-N208TAORUSX W-11GC)
    MonitorAsus ROG Swift PG348Q
    Storage #1ADATA SX8200PNP 1TB
    Storage #22 x Samsung SSD 840 EVO 250GB
    CPU CoolerCoolermaster Liquid Pro Master 360
    CaseEVGA DG-87 Gunmetal Grey Gaming Case
    Power SupplyEVGA SuperNOVA G2 750W Gold Power
    Keyboard Corsair K95 RGB Platinum
    Mouse Corsair Gaming Sabre RGB Gaming Mouse
    Headset ARCTIS Pro Wireless
    Mouse Pad Cooler Master MP750 RGB Cloth Gaming Mouse Pad Extra Large
    OS Windows 10 64bit Pro
    Network RouterRT-AC87U

    Join Date
    Apr 2018
    Reputation
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    Posts
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    No problem. Enjoy your new system

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