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So I have a Radeon HD 5770 and after a lot of stress I'm giving up on plugging three monitors into it. Is my best/easiest option to just buy a cheap PCI video card, pop it into my motherboard and plug a monitor into it?

I've never had two video cards simultaneously before. Is there any risk of driver conflict? Do I need another ATI card? Any other suggestions would be great.

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Depends on the OS you are using. Apparently VISTA restricts the graphics driver to a single driver, windows 7 allows multiple drivers – Joe Taylor Sep 3 '11 at 9:33
    
@Joe Taylor: Technically it is a single driver model, eg 2x4800 but not a 4800 and a 4700. This was huge oversight by Microsoft, but now corrected. – surfasb Sep 4 '11 at 3:19
    
Some of the 3rd gen Intel i7 processors support 3 monitors and so, instead of a video card, in theory you could buy a new motherboard (it would need 3 separate vid connectors on it) and new 3rd gen CPU. – djangofan May 6 '13 at 15:13

Yes adding an additional PCI videocard should work, and there should be no driver conflicts (but no guarantees)

If you want it ridiculously easy get a USB graphics adapter instead.

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I've heard these have issues with performance, do you have first hand experience with one? – Andrew G. Johnson Sep 3 '11 at 15:38
    
@Andrew - Only briefly. It's no good for gaming. But for email, web-browsing and terminal use it worked without a hitch. – Nifle Sep 3 '11 at 15:48
    
Cool, I'm not a big gamer. As is, when I play games on my current setup I only use one monitor anyways. I spent about $90 to get one shipped to my house, will know Friday if this long battle is over! – Andrew G. Johnson Sep 4 '11 at 3:21

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