Mac Pro 4.1 need 7 outputs. GPU combo advice?

[JoshuaBatty]

Hi guys, I have a Mac Pro 4.1 and need to drive 6 projectors for an installation and need a 7th for monitor support.

I was wondering what setups people would recommend? I've heard i can put 2 5770's in but they seem like really old cards now so looking for something with a bit more grunt than that.

Also it would be nice to not have to get an external power supply if possible.

Has anyone managed to successfully get 7 outputs running from a 4.1 model using anything other than 5770's? Would really appreciate some advice. thanks!

 

[MacVidCards]

need to know what sort of inputs you require.

Many projectors still use VGA.

Also, what other cards are present?

4 @ 2600XT will get you 8 displays, and NO power cables.

 

[JoshuaBatty]

Yup all the projectors will need VGA inputs but happy to get adapters if necessary. Will 4 2600XT be powerful enough though? Im running custom software i wrote that uses openGL shaders so it needs to be fairly powerful....

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The mac pro has 1 NVIDIA GeForce GT 120 but i wasn't considering using it cause it doesn't look powerful enough.

Was considering using a GTX 680 and then splitting the display port into 3 using a Matrox triple head but i dont know if that would be better than getting 2 cards running from the PCI slots...

 

[brand]

Was considering using a GTX 680 and then splitting the display port into 3 using a Matrox triple head but i dont know if that would be better than getting 2 cards running from the PCI slots...

All of the slots are PCI slots, PCIe slots that is.

 

[JoshuaBatty]

Yeah but because the powerful cards take up the space of 2 slots, the 2nd card will have to be plugged into slot 3 which doesn't run as fast which im worried about.

Has anyone got 2 new GPU's in their Mac Pro 4.1 model running fine?