Tom's Hardware > Forum > Graphic & Displays > Nvidia > Running Sli on a Crossfire MB-?
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Tinman1234   01-07-2009 at 10:13:58 PM

Hello everyone, glad to be here!
This is as you can see my first post.
I am a complete newbie to SLI and have a few questions I need help with from you please.

I have an Asus Maximus -II Formula MB setup for crossfire video.
I wanted to know if I could run two Nvida based XFX Geforce 8600 1gig & a XFX Geforce 8800 512mb in sli on my asus board mentioned above (Maximus-II Formula)

LINK: http://www.asus.com/products.aspx? [...] odelmenu=2 .

The specs of the motherboard state crossfire ready.
So, if anyone could help me out with some information it sure would be reallly appreciated!

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mactronix   01-07-2009 at 10:20:19 PM

Sorry no you cant,You need an SLI ready board to run SLI. Crossfire ready boards run ATI cards in Crossfire. You can run a single card from any company but only way to run two is with ATI cards, Two Nvidia cards in SLI wont work. I know its not relevant as your board wont let you anyway, but unless its a typo you asked about a 8600 and 8800 card, well as far as i know you need two 8800 cards or two 8600 cards and cant mix the two.

Mactronix

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grieve   01-07-2009 at 10:26:53 PM

+1 ^
The only exception being X58 motherboards.

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Bronze Graphics badge mousemonkey   01-07-2009 at 10:55:15 PM

mactronix wrote :

Sorry no you cant,You need an SLI ready board to run SLI. Crossfire ready boards run ATI cards in Crossfire. You can run a single card from any company but only way to run two is with ATI cards, Two Nvidia cards in SLI wont work. I know its not relevant as your board wont let you anyway, but unless its a typo you asked about a 8600 and 8800 card, well as far as i know you need two 8800 cards or two 8600 cards and cant mix the two.

Mactronix


Not for SLI no, you are quite correct my learned friend, but would the 8600 be able to run as a physic's card to the 8800 seeing as it's Crossfire board?

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
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mactronix   01-07-2009 at 11:27:17 PM

That is indeed a very good question. My gut feeling is that it should be able to, the requirements as i understand them only require an 8 series or higher card. What i dont know though is how the drivers would see it, as i dont fully understand how the drivers work. Talking of which i beleive that Vista requires the same drivers for all GPU's on the system dosent it ? If thats true, (its something i just remembered reading somewhere) then you could only do it under XP.

Mactronix

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B-Unit   01-07-2009 at 11:33:21 PM

Theres no reason both cards shouldnt function, just cant SLi them.

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grieve   01-08-2009 at 12:13:30 AM

I also think both cards will function, just not in SLI mode... User wants to run SLI.

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Bronze Graphics badge mousemonkey   01-08-2009 at 12:31:42 AM

mactronix wrote :

That is indeed a very good question. My gut feeling is that it should be able to, the requirements as i understand them only require an 8 series or higher card. What i dont know though is how the drivers would see it, as i dont fully understand how the drivers work. Talking of which i beleive that Vista requires the same drivers for all GPU's on the system dosent it ? If thats true, (its something i just remembered reading somewhere) then you could only do it under XP.

Mactronix


It should work under vista as well then as Nvidia drivers are a 'one size fits all' jobbie. And yes grieve, I know they won't run in SLI mode both myself and mactronix mentioned that in our previous posts.

------------------------------ [:mousemonkey:1] http://img29.imageshack.us/img29/5041/vr2009champ.jpg
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roofus   01-08-2009 at 02:59:57 AM

you couldn't SLI those two cards even on a SLI board. the cards don't have to be the same manufacturer but do need to be the same GPU.

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