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Thread: Loss of SLI/Second GPU upon installing Alpine Ridge Thunderbolt PCIE Card with I7-6800k, GA-X99 Ultra Gaming Motherboard




  1. #1
    kayfusen is offline Junior Member
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    Default Loss of SLI/Second GPU upon installing Alpine Ridge Thunderbolt PCIE Card with I7-6800k, GA-X99 Ultra Gaming Motherboard

    Hello to all! Sorry for repeat post, as I couldnt find my first post initially:

    I recently purchased the Alpine Ridge Thunderbolt 3 card (version 2.0), to add to my system below:

    X99 Ultra Gaming Motherboard
    i7-6800k
    OS Drive - Toshiba NVME SSD
    TWO Sata SSD's
    HDD
    1070 SLI
    running on latest bios

    So upon reading the motherboard manual carefully, it mentions the PCIE x16_1 slot would operate at x8, if slot x8_1 is populated (shared lanes). I'm thinking my thunderbolt card would work. However, with the card installed, I lose SLI. The Nvidia Control only recognizes one of the GPU's. It does however show that GPU at running at x8 mode. I was expecting the following

    PCIE 16 slot 1: x8 (GTX 1070)

    PCIE 16 slot 2: x8 (GTX 1070)

    PCIE 8 slot 1: x8 (Thunderbolt add in card)

    PCIE 8 slot 2: disabled

    Is this configuration not doable with an i7-6800K?

    I'd definitely like to know as I'm about to return the card. Thanks!

    -Kaonis
    Last edited by kayfusen; 07-23-2019 at 12:56 AM.

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