Crossfire HD5770 for Eyefinity

[danspd]

I have two hd5770 running in crossfire and I wonder if it will be enough to run decent games in eyefinity mode with crossfire enabled?

Edit #1:
Also I assume I will have to plug in all screens in first video card. But I have two DVI and one HDMI input.
Will it be ok if I use two DVI and one hdmi inputs? For crossfire and eyefinity of-course

Intel i5 750
8GB DDR3
80GB SSD
2x ATI 5770 Crossfire
3x Mag 21.5" LCD

 

[Starges]

You cannot use dvi & hdmi at the same time. YOu need an actice DP adapter for Eyefinity.

Also, not that many games support Eyefinity, so its not really worth the expense of 3 monitors

 

[airborne11b]

But on games that don't work in Eyefinity, could you run 1 monitor as main gaming screen while being able to view 2 desktops on the other 2 monitors? To surf web/watch movie while playing games. Multi-tasking capability needs to be considered too.

 

[Starges]

That is very possible, that's the purpose of multiple screens. But for that you will need an active DP adapter if your 5770 does not have 2 DVI ports.

 

[henrystrawn]

I have 2 XFX 5770s in crossfire. I am using 2 viewsonic 19" @ 1280x1024, flanking a 32" Samsung 1080p LCD TV @ 1920x1080. I do not have any with Displayport inputs. When I game, I enable crossfire and drop to the LCD TV, and when finished I disable crossfire and use the three displays extended.

When I bought the first 5770, I tried for the eyefinity thing, but decided if I was going to spend any more money on an active adapter or monitor with a DP input, the money would be better spend on a second card for crossfire. I already had a capable PSU and CF supported motherboard.

I am very happy with my decision. Until games have better support for eyefinity, I think that I am good to go.

 

[Starges]

You mean eyefinity can work on different sized monitors? How then is the image extended to the smaller 19'' screens?

 

[henrystrawn]

You mean eyefinity can work on different sized monitors? How then is the image extended to the smaller 19'' screens?

Sorry for the confusion. I am not using Eyefinity. Eyefinity requires one monitor using the Displayport output, or an ACTIVE Displayport adapter. The adapter needs to be powered and uses a USB plug for power.

I tried to use a DVI to VGA adapter, and was only able to get 2 of 3 monitors to work at the same time. Then I found out that I needed an ACTIVE DP adapter. Rather than spend $100 on an ACTIVE DP adapter or $300 on a monitor that had a DP input, I just spent $160 on a second HD 5770, so I could crossfire on one monitor, and use three displays in non crossfire.

I have read that you can use different resolutions with Eyefinity, I am GUESSING that it will use the smallest vertical resolution of your monitor array.

 

[henrystrawn]

With the bezel width on the TV, it would be like lookin' out a backhoe while gaming.

I think using just one monitor looks better. Would love to own 3 bezel-less diplays. I did make good use of the video card boxes, since box art is so popular here at Tom's.