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The GTX 680 has 4 outputs.
2 DVI
1 HDMI
1 Displayport
Connecting up the DVI's and HDMI should be easy enough but unless you have a monitor with a displayport input it could be tricky to get the 4th screen going.
You didn't say what your intended use is for the four screen setup
If you just need to display across four screens and graphics horsepower isn't a concern, then it would be much more finacially viable to use a pair of older videocards.
or 6870 for 130£
To me it still looks like a HD 6850 supports 4 screens as long as it has 2 DP connectors.
http://img815.imageshack.us/img815/5776/4screens.jpg[IMG][/URL][/QUOTE]
Ah ok, I think you're right then (as usual...)
Ah ok, I think you're right then (as usual...)
You're making me feel bad now
As far a I know, the sapphire flex cards are the only ones that do 4/5 monitors from a single AMD card.
Are you planning on using it for gaming? If so, go for the single card. If not, buy any two of the cheapest graphic cards you can find (both from AMD, or both from NVidia, to keep drivers simple), and cannect two monitors to each.
If no gaming is involved, and they have two x16 PCI-E slots, then a couple of £20 cards would do the job.
More information needed really.