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Cannot setup 3 monitors with extended display

Last response: in Graphics & Displays
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April 30, 2014 10:02:23 AM

I know this has probably been asked several times, I've looked on the forums and everyone directs to buying a display port adapter, so I did, but still can't set it up.
I have 3 monitors, all the same resolution
I have an XFX 6870
One monitor connected via HDMI
One monitor connected via DVI
One monitor connected via mini display port (dvi)

They all work fine as dual screens but not triple, I want to set the middle one as my main desktop and extend the other two, I've tried setting up eyefinity display group on CCC but the only options I get are 2 displays (2x1) and 2 displays (1x2).

Any ideas?

thanks
a b C Monitor
April 30, 2014 10:13:21 AM

You probably have the wrong mDP to DVI adapter. Which one did you buy? I HAS to be an active one.
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a b C Monitor
April 30, 2014 10:14:14 AM

If Eyefinity works the same as Nvidia's Surround, you need three of the same connections (3 DVI-D, 3 HDMI, or 3 DP). And usually using DVI-D, you need an active adapter to get the third monitor to work. But that is also with two GPUs. So I'm uncertain of how it works with a single GPU.
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a b C Monitor
April 30, 2014 10:19:23 AM

It never says its an active one. Price is about right, but it never says active. Yes, it's important. I'm using two of these on my 7950.

http://www.amazon.com/gp/product/B004SUELLC/ref=oh_deta...

I have three monitors on my desk, DVI, and two of those adapters. I also have my LCD TV hooked up over HDMI. All are extended and it works great. Game on "center" monitor, chat and music programs on the side. And I can put videos up on my main TV. Only thing that makes sense to me is the adapter isn't correct.

Quote:
If Eyefinity works the same as Nvidia's Surround, you need three of the same connections (3 DVI-D, 3 HDMI, or 3 DP). And usually using DVI-D, you need an active adapter to get the third monitor to work. But that is also with two GPUs.


That was with the older GTX4xx and 5xx cards. Starting with the 6 series they can handle more then 2 outputs at once. So the 660TI should be able to do this as well.

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April 30, 2014 11:52:17 AM

4745454b said:
It never says its an active one. Price is about right, but it never says active. Yes, it's important. I'm using two of these on my 7950.

http://www.amazon.com/gp/product/B004SUELLC/ref=oh_deta...

I have three monitors on my desk, DVI, and two of those adapters. I also have my LCD TV hooked up over HDMI. All are extended and it works great. Game on "center" monitor, chat and music programs on the side. And I can put videos up on my main TV. Only thing that makes sense to me is the adapter isn't correct.

Quote:
If Eyefinity works the same as Nvidia's Surround, you need three of the same connections (3 DVI-D, 3 HDMI, or 3 DP). And usually using DVI-D, you need an active adapter to get the third monitor to work. But that is also with two GPUs.


That was with the older GTX4xx and 5xx cards. Starting with the 6 series they can handle more then 2 outputs at once. So the 660TI should be able to do this as well.



I guess it does point to that, the only thing that makes sense to me as well. All the monitors are working fine and my graphics card can support it without a problem. Ordered the same adapter as yours (ebay though, was cheaper xD)
thank you
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