What is better to power 4 displays...2x7900GTX or 4x7900GT

[dinther]

I am looking at the Gigabyte GA-8N SLI QUAD ROYAL mobo to build a PC that is to run a simulator program. It will have 4 displays each displaying a 3D view into an OpenGL scene.

What is better to power 4 displays...

2 x 7900GTX with 2 displays on each card. Card running on a x16 PCIe bus

or

4x7900GT with 1 display per card. Each card running on a x8 PCIe bus

4 x 7900GTX is simply too expensive.

 

[blinkin2000]

FYI: SLi will not support multiple monitors. 4 monitors will work but not in SLi mode. The 7950 is also not an option with multiple monitors since it is native in SLi.

That is why i sold my 7800Gt Sli setup and got one 7900gtx. With one card i can force my desktop to 3200x1200 and the games treat it as one display. (horibble for FPS, Good for RTS)

try 2 x 7900gtx

What displays do you have?

 

[dinther]

I am looking at a quote right now that has the Gigabyte GA-8N SLI QUAD ROYAL mother board with two 7900GT cards hooked up to 4 WXGA 8ms(1440 x 900) LCD panels. The processor is a Pentium D 3.6ghz 960 and 2 Gig DDR2 ram.

This setup is to power a simulator program I am developing that has separate views on 4 separate windows that can be placed on each monitor. The big question is:

Will this configuration indeed accelerate the 3D in all four windows on all four monitors?

 

[blinkin2000]

When i had sli mode disabled and the game display on both monitors, my performance was of one graphics card.

I aslo tried it with dual 7950s (sli disabled) and the performance was of one card. Although that was with 91.31 drivers not the new beta quad-sli drivers

For budget purposes i would go with a mainstream sli board (for support purposes) and two 7900gt. so if you dont get the results you want, you wont be out so much money.