How to connect three monitors to two GPUs? Please help


  1. Posts : 3
    Windows 7 Ultimate x64
       #1

    How to connect three monitors to two GPUs? Please help


    I currently use three same AOC IPS 24" 1920x1080 screens plugged into one GPU AMD Sapphire R9 280x. It works well on resolution 5940x1080 (incl. bezel compensation). But now, I would like to upgrade my PC with more powerful GPU. I think that 3GPUs for 3 monitors should be the best solution, but in my current case with not the best cooling system and with my current PSU (1200W) is not a good idea. So is it possible to use only two (e.g. both same) GPUs for three (all same) monitors? In other words Are they able to works properly and in balance if physically one GPU will supply one monitor and the other one two monitors?
    Many thanks for the advice
      My Computer


  2. Posts : 13,576
    Windows 10 Pro x64
       #2

    A 1200 watt PSU would be fine for 3 GPU`s, but do you need 3 ?

    You want to use all the same series GPU`s preferably all made by the same company with the same specs.

    You should connect all your monitors to the top GPU.

    Unless all 3 PCI Express slots can run all 3 cards at x8 speed, I would only get 2 cards.
      My Computer


  3. Posts : 5,656
    Windows 7 Ultimate x64 SP1
       #3

    I used to have SLI with 2 different GTX 480s. Different manufacturers, one reference, other was factory overclocked and they still performed well without issues. You can even do SLI with different models (as long as first 3 numbers of dev_id match iirc) from same series with a certain *cough* hack *cough*

    Plus, AMD has better compatibility with CrossFire tech as far as I know.

    I would go with 2x setup as well as AddRAM suggests. Not all games support CrossFire anyway.
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  4. Posts : 3
    Windows 7 Ultimate x64
    Thread Starter
       #4

    Thank you so much for replies...

    So basically, if I'll have two same GPUs interconnected with CrossFire to each other and I'll want to plug in three monitors so I should plug all of them into the upper GPU and both GPUs will be processing even one of them will be without plugged a monitor?
      My Computer


  5. Posts : 9,600
    Win 7 Ultimate 64 bit
       #5

    Hans43 said:
    Thank you so much for replies...

    So basically, if I'll have two same GPUs interconnected with CrossFire to each other and I'll want to plug in three monitors so I should plug all of them into the upper GPU and both GPUs will be processing even one of them will be without plugged a monitor?
    Correct.
      My Computer


  6. Posts : 3
    Windows 7 Ultimate x64
    Thread Starter
       #6

    Cool Now it's clear to me... Thank you all
      My Computer


 

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