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Trying to add a 3rd non-crossfire card

post #1 of 5
Thread Starter 
...and with no success.

I had used an old X700 in conjuction with my 5850 so I could have three monitors for quite a while, but recently I got a hold of a second 5850 so I am now crossfireing them. However, now when I try to add a third graphics card of any kind (I even tried an old PCI graphics card) the card will fail to start.

I really want to get three monitors going again and preferably without buying a new monitor or an active DisplayPort adapter (which makes me wonder what the pupose of the non-powered adapter is).

Any one ever get this working?
Edited by Vagrant Storm - 4/23/11 at 9:41pm
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post #2 of 5

If you're willing to use vga on your third monitor, an active vga to displayport adapter doesn't need external power and is much cheaper (

). At least that's what I've read, have yet to do it myself though.
    
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post #3 of 5
Thread Starter 
Oh? I've thought that they all had to be active. I will have to look into more...

yeah the wing-men as I call them are only 1440x900 and are only used for non-3D stuff. One of them I have always hooked up via VGA.

doh that is an active adapter....
Edited by Vagrant Storm - 4/22/11 at 4:54pm
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post #4 of 5
Thread Starter 
I actually found this too

Cheap DVI active adapter

Claims to be Eyefinity certified...not that I will be doing eyefinity, but three monitors is still three monitors. Though I thought the powered adapters had a USB cable to power them. This doesn't have anything but the displayport and the DVI

Though I still would rather just get a third card working. I still don't see the problem...I've even checked the IRQs. I think I might try it with crossfire turned off just to see if three cards will work at all. Maybe it is an issue with my mother board. I've never actually had three cards in before
Edited by Vagrant Storm - 4/23/11 at 9:39pm
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post #5 of 5
Thread Starter 
bump...

If I disable crossfire then I can add a third card and have it work fine, but that doesn't help. Plus, I realized that getting an adapter to put three on one 5850 won't work since if I overclock then I will get screen flicker on the wing monitors.

Has any one successfully added a third non-crossfire card to an existing crossfire setup?
My System
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CPUMotherboardGraphicsGraphics
2600K @ 4.7GHz Asus P8P67 B3 GTX 580 EVGA Hydro Copper 2 GTX 580 EVGA  
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4x4GB G.Skill Ripjaws bunch of 'em Blu-Ray For movies Windows 8.1 
MonitorMonitorKeyboardPower
24.4" Hans G HH251 X2 Yamakasi DS270  Blah 1000watt Super Flower 
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Built into Desk Microsoft SideWinder X8 Comfy one... Creative Extreme Gamer 
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My System
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CPUMotherboardGraphicsGraphics
2600K @ 4.7GHz Asus P8P67 B3 GTX 580 EVGA Hydro Copper 2 GTX 580 EVGA  
RAMHard DriveOptical DriveOS
4x4GB G.Skill Ripjaws bunch of 'em Blu-Ray For movies Windows 8.1 
MonitorMonitorKeyboardPower
24.4" Hans G HH251 X2 Yamakasi DS270  Blah 1000watt Super Flower 
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Built into Desk Microsoft SideWinder X8 Comfy one... Creative Extreme Gamer 
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