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Eye Infinity question

post #1 of 15
Thread Starter 
I'm sure this has been asked a lot so sorry about that but...

Do I really need a display port to use Eye Infinity? if so can someone recommend me very cheap one?

I only have a 5770, but I'm planning to upgrade the video card and as of now I just want to play around with it and see if I like eye infinity. So far I tried yesterday playing with a 24" monitor and a 23", but having that line in the middle sucks specially when playing FPS (it was just for testing). My brother has another 23 inch monitor which I will borrow to have 23" and one 24". If I like eye infinity a lot and enjoy it I'll probably plan buying all same size monitors.
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post #2 of 15
You need three or more of the exact same monitors I believe. and yes you have to have display port. If you want to avoid that, switch to Nvidia.
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post #3 of 15
You need an active adapter to drive the third display if you don't have a display port monitor.

Just a simple adapter will do. You have to use the display port connection. That's why we need the adapter. Here's a list of guaranteed to work adapters. Check the max resolution stat though, or you might end up getting an adapter that doesn't support resolutions high enough.

http://support.amd.com/us/eyefinity/Pages/eyefinity-dongles.aspx

Quote:
Originally Posted by metroidfreak;14284108 
You need three or more of the exact same monitors I believe. and yes you have to have display port. If you want to avoid that, switch to Nvidia.

Nope. That's an nVidia thing. Only nVidia requires identical monitors (to guarantee same sync polarity). On AMD, you can choose any combination you want. It'll just run the highest common resolution and refresh rate.
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post #4 of 15
OT but your phrasing made me think of Dunder Mifflin-Infinity.
post #5 of 15
I do believe you need three of the same monitors if you want Bezel Management though.
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post #6 of 15
Quote:
Originally Posted by Chranny;14284236 
I do believe you need three of the same monitors if you want Bezel Management though.

Well, not exactly. They just need to have similar EDID info. For example, you could most likely use bezel magement with an eyefinity setup that has a HP ZR30W, a dell U3011 and a dell 3008wfp. But it's not guaranteed if you don't have identical screens.
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post #7 of 15
Hey, I've heard thet you need to use displayport because the cards only have two chips for dvi/hdmi. I've also understood that the VGA chip is a separate one, so technically you could use three monitors as DVI & DVI & VGA or DVI & HDMI & VGA. Am I correct or is this false?

My sources:
radeon-hd-5870,5-1-224389-13.jpg
from http://www.tomshardware.com/reviews/radeon-hd-5870,2422-8.html
also some guys on youtube like in this video:
[ame]http://www.youtube.com/watch?v=nKg5VRIrw28[/ame]
who has a passive DP -> VGA adapter.
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post #8 of 15
Quote:
Originally Posted by Sentri;14284270 
Hey, I've heard thet you need to use displayport because the cards only have two chips for dvi/hdmi. I've also understood that the VGA chip is a separate one, so technically you could use three monitors as DVI & DVI & VGA or DVI & HDMI & VGA. Am I correct or is this false?

My sources:
radeon-hd-5870,5-1-224389-13.jpg
from http://www.tomshardware.com/reviews/radeon-hd-5870,2422-8.html
also some guys on youtube like in this video:
http://www.youtube.com/watch?v=nKg5VRIrw28
who has a passive DP -> VGA adapter.

I don't know if that VGA spec is true. However, keep in mind, DVI carries analog signal as well, so the VGA signal is probably generated by the same thing that does the VGA thing, if the GPU has a VGA port, which most don't.


Second, there are NO passive DP to VGA adapters. Some people mistake them for passive because they don't require external power, but they're still active. DP is purely digital. VGA is purely analog. You can't make a passive adapter for the transfer. It HAS to be active. Like my accell DP to VGA adapter. It has no external power but because it goes from pure digital to pure analog, it's active. It has to do the conversion with a chip inside the thing. It gets the power it needs from the mDP port. As I said, some people mistake these for passive, although they're not.
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post #9 of 15
Okay then I have mistaken. Nevertheless, these DP->VGA adapters are way cheaper than active DP->DVI adapters so they would be a more preferable choise for me if they really work.

I just asked on irc and a guy there said he has one of these DP->VGA adapters in use as a third display, so I suppose it's true that they work also. He also said that there's some flickering in the image sometimes but that's propably the adapter and not the card.
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post #10 of 15
you can use any 3 monitors
i used 2 16:9 and one 16:10 in the middle, just stretched the image a bit

edit: also using dp to vga is a smart choice, work the same and is much cheaper. unless your going above 1080p or over 60 hrtz
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