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Connecting 8 monitors to two AMD R9 380 video cards in the same computer

Question asked by bennu on Aug 4, 2015
Latest reply on Sep 9, 2015 by jovechiere

My current problem regards an audiovisual installation with 8 different video projections. Ideally, I should have all of the equipment hooked up to one single computer to make maintenance easier and allow for video sync.

I have built a computer with the following specs:

AMD 8370E 8 core processor

Sabertooth 990FX motherboard

24GB RAM 1866MHz DDR3

Samsung Evo 850 250GB

Two Radeon R9 380 4GB graphics cards

The system works well and performance is great. My question regards connecting 8 monitors [or, in this case, projectors] to those two graphics cards. I am still waiting for all the equipment to arrive, therefore I could not fully test my installation yet; I tried to connect a single monitor to the second card only, but it did not work, it seems this monitors should be connected to the master. This got me a bit worried.

Is it possible to connect 4 monitors to the first card and then 4 monitors to the second one using only one computer? Once all ports of the master card are occupied will I be able to use the second card for the rest of my projections?

Should I disable Crossfire to achieve that or is there a settings I am missing?

Thanks in advance, bennu