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I want to set up a system with (9) monitors arranged in a 3x3 grid.

Is this configuration possible with Windows 7? Does it max out at a set number of monitors?

Any suggestions about known working hardware combinations would be much appreciated. Currently considering (3) nVidia Quadro NVS420 cards to drive the array.

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6  
I envy your budget. Good luck! –  RJFalconer Jan 7 '10 at 16:46
    
Any reason not to use Eyefinity? You probably only need two 5870's to drive that setup –  Ivo Flipse Jan 7 '10 at 16:55
    
@Ivo Eyefinity allows 6 monitor at maximum –  Drake Mar 29 '10 at 14:11
    
@Drake, it works fine as long as you don't want to use a full-screen application on all monitors. A windowed application filling all the monitors is fine though. Just don't try a game or CAD application. –  Mircea Chirea Dec 29 '10 at 22:10
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5 Answers

There is no "limit" per se set by Windows. You are only limited by your ability to implement the hardware to support it. However, in order to make the maximum use of it and to make sure it works smoothly together, all of your video cards should use the same driver. If you start mixing different video cards/drivers it starts to have problems.

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I was just looking up whether Eyefinity (by AMD/ATI) would be a good alternative, so I'm not sure whether Nvidia's cards enable you to do so. Though like BBlake said, I don't think Windows will limit you.

The AMD site notes:

Number of Monitors:

• Up to six dependent on graphics card configuration

Aggregate Screen Resolution:

• The aggregrate of screen resolution will vary based on the number of panels and screen resolution. The theoretical maximum: 8192 x 8192 (67.1 megapixel resolution) consisting of 6 panels of 2560 x 1600

Monitors:

• AMD recommends DisplayPort Display monitors, as they offer optimal flexibility with the highest number of display outputs

• Depending on the specific graphic card and operating system, ATI Eyefinity technology can support up to six displays. For configurations using more than two displays, additional displays must have DisplayPort connectors.

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up vote 2 down vote accepted

I ended up using a device called a VWBox 133A from IEI to split a display port output into the required 3x3 array.

Posted full specs for all hardware used for the project here:

http://www.oceanbytes.org/2010/10/31/how-to-construct-a-global-visualization-lab/

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That's pretty sweet. –  nhinkle Mar 18 '11 at 15:29
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If you want to setup nine monitors, you'll certainly have to look beyond consumer products.

With Cinemassive Video Wall you can drive up to 64 monitors on a Windows machine.

enter image description here

enter image description here

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Now that's just frickin cool... –  BBlake Jan 8 '10 at 16:16
    
Cinnemassive just did a display at McCarran International with 100 displays. It is touted as the largest display of its kind. –  Sarge Mar 18 '11 at 15:16
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Windows does have a hard limit on maximum resolution and overall pixel count. The maximum continuous windows desktop available is up to 32k horizontal pixels by up to 32k vertical pixels with an overall pixel limit of 128 million pixels. Which means that a 32k x 32k desktop is not actually possible. Even video wall processors, which are generally purpose built windows dekstops, are constrained by these limits.

Max pixels >= horizontal pixels(H) x vertical pixels(V)

128 Million >= H x V

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