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Windows 7: How to connect three monitors to two GPUs? Please help

21 Jun 2015   #1
Hans43

Windows 7 Ultimate x64
 
 
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 System SpecsSystem Spec
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21 Jun 2015   #2
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

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 System SpecsSystem Spec
22 Jun 2015   #3
GokAy

Windows 7 Ultimate x64 SP1
 
 

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.
My System SpecsSystem Spec
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24 Jun 2015   #4
Hans43

Windows 7 Ultimate x64
 
 

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 System SpecsSystem Spec
24 Jun 2015   #5
Lady Fitzgerald

Win 7 Ultimate 64 bit
 
 

Quote   Quote: Originally Posted by Hans43 View Post
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 System SpecsSystem Spec
24 Jun 2015   #6
Hans43

Windows 7 Ultimate x64
 
 

Cool Now it's clear to me... Thank you all
My System SpecsSystem Spec
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 How to connect three monitors to two GPUs? Please help




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