How many LCDs can I run with my video cards?

scg

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May 19, 2006
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I have two 7800GT's (SLI connected but disabled). Each card supports a maximum of 2560X1600. I'm not sure if this is "addative". IE, not sure if I have a total capable resolution of 5120x3200 or if it's still limited to 2 2560x1600.

I would like to do TWO LCDs at 1680x1050 plus a 1280X1024. So a total of 3 LCDs. If my total resolution available is "addative" then I think this will work. If it's not addative, I think I'm limited to just the two 1680x1050's.

How does the resolution capability work when you have two 7800GT's?

Thanks,
SC
 

Avat

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May 24, 2006
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IIRC, as long as SLI is disconnected then the monitors are 'additive'. Once SLI is 'bridged' then the GPU's are working as a pair, therefore limiting you to the two Dual-link DVI's and one component on the back of the card.

Thing is, I don't really think the card's native resolutions works in a mathematical format, meaning there's no 'addition' or 'subtraction' in regards to the resolution of a monitor(s) used.
 

scg

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May 19, 2006
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Yeah, I actually bit the bullet and ordered the 3 monitors. Except I decided to go with 3 widescreens. Looks good :)

You are correct, the resolution doesn't "add", but with two cards (SLI disabled) you can have 4 monitors each with 2560x1600 resolution.