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3 monitor eyefinity with 120hz displays - Page 3

post #21 of 25
I do know that the 5870 and 5770 can run two different LCDS at two different refresh rates. One of my 6 computers on my Lan is running one LCD at 120HZ 1920 x 1080 rez and another at 1680 x 1050 at 60hz. Yes thats correct, two different Hz rates and two different resolutions.

So that being said.
In a three LCD set up probably the best thing to do would be to run the center LCD at 120hz and have the left and right LCDs running at 60Hz. Most of the shooting action is going to be on the center LCD so the 120hz will benefit most here.
I'm talking non 3D here, talking about running a FPS in 2D mode. If you are a slow gamer this will be greek to you, if you are a pro level FPS gamer the 120hz will be of use to you, more like CRT speed.
post #22 of 25
^You can do extended monitor setups with different Hz, resolution, or whatever.

You can NOT do eyefinity or surround on mixed resolutions. Mixed refresh rates don't work unless you abuse a certain glitch which has no guarantee of working.

If you plan on gaming with 3 monitors, you need to enable eyefinity. And eyefinity doesn't allow mixed resolutions or refresh rates, so you need the same resolution and refres hrate.
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post #23 of 25
Well it seems to on my system.

One 120hz alienware and one 60hz Viewsonic with diff rez. It will do both at diff refresh rates during games. Two is no good for most games as you get a big black bar in middle.
post #24 of 25
Quote:
Originally Posted by RAJOD;14084118 
Well it seems to on my system.

One 120hz alienware and one 60hz Viewsonic with diff rez. It will do both at diff refresh rates during games. Two is no good for most games as you get a big black bar in middle.

Well there are some ways that 60hz - 120hz - 60hz might work but it's not reliable

Different resolutions will not work for eyefinity. Ever. Extended mode works, though
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post #25 of 25
Quote:
Originally Posted by chieftex View Post

You CAN do this! But it'll cost you a bit extra for the adapters you need.
You need the following:
3x 120hz monitors (which you have/will have)
3x DUAL LINK Dvi-D cables (Dual link is important here, see below)
Then EITHER:
OPTION 2 - 2x active mini dp to DUAL LINK dvi adapters (again dual link, and these won't be cheap)
OR
OPTION 1 - 2x mini displayport to displayport cables, in which case you only need 1x dvi cable above).
Single link dvi can handle resolutions of up to 1920x1200@60hz (or thereabouts I believe), but increasing the refresh to 120hz takes a lot more bandwidth, and is more than single link can handle. Dual link has a much higher threshold than this and can handle it.
OPTION 1: Your monitors have displayport. If they do, you'll save money as you don't need the adapters mentioned above - just mini dp to dp cables. And 1 dvi cable (as your vid card only has 2 displayports). In this setup, your vid card uses its two displayports to connect directly to two of the monitors, and the DUAL LINK dvi port on the card (one of them is and one isn't), to connect to the third monitor.
OPTION 2: Your monitors DON'T have displayports. This is the more likely option, as I don't think there are any 120hz displayport monitors around at the moment (someone please correct me if I'm wrong). In this case, you will STILL need to use the 2 displayports on your video card, as they support the high resolution and res that you will need, equivalent to dual link dvi. You will need the adapters I mentioned above, to then connect to dual link dvi cables. In this setup, your vid card connects its displayports to dvi adapters, and then to dual link dvi cables to two of the monitors. The third monitor would connect directly to the dual link dvi port on your video card.
As you can see, you NEED to use your displayports one way or another, as eyefinity with more than 2 monitors REQUIRES it, and 120hz REQUIRES dual link equivalent bandwidth, rendering one of the dvi ports (and the hdmi port) useless for this.
I was very close to doing this setup, but opted for 3x 27 inch 1080p 60hz screens instead of 23 inch 120hz screens as I thought screen size was more important than 120hz. I still don't know if I made the right decision, but I love my current setup!
Hope this helps!


Great and clarifiying, please can you light me about how your setup look like, do you have any pics you can post here. Im in the same situation right now, I must choose 3 x 23" 120hz or 3 x 27 60hz, what would be better?, I don't know. Can you help me?. And please can you show me how the heck did you connected all 3 monitors?. Greetings from Argentina.
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