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  • #4017864

    [HELP] is it possible/worth for me to add my second 1080 Ti GPU ? (NO SLI)

    by zanone.romain ·



    I create this topic because i have a second unused 1080 Ti GPU and i want to know if it’s possible and worth for me to add it to my system ? (NO SLI, mainly video editing usage)
    I apologize for my low english level and thank everyone in advance for your support !

    My system at the moment:
    Motherboard : MSI Z370 Gaming M5
    CPU : Intel i7-8700K
    GPU : x1 MSI 1080 Ti Gaming X (connected in my top PCI_E1: PCIe 3.0 x16)
    RAM : 2 x 8 Go DDR4 3200MHz CL16 Corsair Vengeance
    PowerSupply : 850 Watt Corsair HX850i
    Cooling : Corsair H115i
    Storage : – SSD Samsung 960 EVO M.2 250Go (connected on my M2_2 slot Pcie )
    – HDD 2T0 on SATA
    Monitor : 2k 144hz ROG SWIFT PG278Q


    If i add my second 1080 Ti on my second PCIe slot, will it be compatible with my system ?
    MotherBoard slots : 3 x PCIe 3.0 x16 slots (support x16/x0/x4, x8/x8/x4 modes)
    Question 1 : So apparently its ok but i will be in x8/x8 mode, is it better than only one GPU in x16 mode ?

    PCIE Lanes :
    Question 2 : My CPU as a max of 16 pcie lanes, if i’m in x8/x8, my cpu will be able to use my 2 GPU and my SSD correctly ?

    Power supply :
    According to Cooler master power supply calculator my 850 watts will be enought for my dual 1080ti (it recommand 700watt)

    WORTH ?
    My usage of computer : I used to have a gaming usage of my PC, but nowadays i mainly use it for Première pro video editing (80%) and sometimes gaming (20%)
    I know that without SLI, i wont be able to have better performance in gaming situation, but my goal is to mainly increase my video editing performances.
    Question 3 : If we consider my system compatible with this dual GPU setup, will it be worth for me in term of video editing performance ?

    Windows & Premiere pro configuration
    Question 4 : After connecting my second GPU to my system, what settings on windows and première pro should i do to totally benefit from my dual GPU setup ?

    Thanks for all your help and advices !

    (Bonus question : if i give you 500$ to upgrade my configuration, what would you change ? :P)

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    • #4017866
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      Can’t answer.

      by rproffitt ·

      In reply to [HELP] is it possible/worth for me to add my second 1080 Ti GPU ? (NO SLI)

      Why? Incomplete details. For example the power supply may make it incompatible since this new card could push the power supply too hard or there are not enough power connectors. Research that and with a dual 1080 setup I’d just go get one of those nice 1,000 Watt power supplies.

      Yes, you can run dual non-SLI or crossfire graphics cards. All we need is enough slots and power You can even run both integrated graphics and a discreet graphics card together in a non-SLI or non-Crossfire configuration.

      What you CAN’T do is use them BOTH for gaming. So let’s be clear that at no point can it be said that you can “totally benefit from my dual GPU setup.”
      The answer to the second part of the question is a definite NO. But it may help in some scenarios.

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