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Dual Nvidia graphics with NF4 Ultra-D mobo.

post #1 of 10
Thread Starter 
HI,
Somewhat nublish questions, couldn't find the answer by searching previous threads, need some one to clarify several questions i have about Nvidia's dual graphics tech.
I have some cash to spend, and i thought that getting a second GF 6600
for my new rig will be a nice boost, my mobo certainly supports ATI
"cross-fire" technology, i width to confirm that it also supports Nvidia DUAL Graphics.

I also was told that i have to bind the two cards with some kind of converter, where do i get such a thing.

Another thing i wish to clarify is the cards that compatible with this technology, do i need to buy specially adapted cards?, or will any two matching cards recently manufactured fit?.

Do i need to use card from the same manufacturer(xfx, gigabyte), interface(DDR, GDDRII), amount of memory and interface-width(in bits),
models, and cores?. or can i settle with just the same amount of pipes?(like with the cross-fire tech). does any of this properties
have to match?.
For instance, can i run my card(forsa, 128 bit, 256 mb DDR) with xfx GF6600 GT GDDR3 with 128 mb memory 256 bit. or with xfx 6600 512 mb GDDR2?.
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post #2 of 10
IM not 100% sure, but I do not think you can run SLI on a Crossfire board ( i believe thats what your asking? ) The SLI bridge that you need would have come with the mobo if it did support it. With the newest Nvidia drivers you can use cards from different vendors, but they must be speced the same i.e. 2 7800gt 256mb ddr3 cards for sli to work. Sorry for the bad news.
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post #3 of 10
1) Look for a Leadtek SLI bridge, that's what you connect the cards with.
2) There is an SLI mod to the Ultra-D that you need to perform in order to use SLI.
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post #4 of 10
well for starters this is your mobo
http://www.dfi.com.tw/Product/xx_pro...YPE=LP&SITE=US

it is Nvidia SLI ready, but not crossfire. so you can use any two SLi ready gfx cards that use the same gpu.

That means that you can get another 6600 and run two of them. But it would be much better for you to spend your money on one 6800GS. You'll get better performance out of one 6800GS than two 6600 series cards. Yes, you will see a dramatic improvement with 2 cards, but one better card will do more for you right now.

As for the SLI bridge. you can find one in the box your mobo came in. All sli ready mobos come with a bridge.
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post #5 of 10
Thread Starter 
Where does it say that the board is SLI ready?, and which cards are SLI ready?, is it such rare feature?, for example, does my card supports SLI?.
www.forsa.com.hk

Thanks you all guys for your help so far.
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post #6 of 10
Thread Starter 
Quote:
Originally Posted by Burn
1) Look for a Leadtek SLI bridge, that's what you connect the cards with.
2) There is an SLI mod to the Ultra-D that you need to perform in order to use SLI.
Can i get a reference to a tutorial please?.
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post #7 of 10
Yeah, I'll get you a link. Your mobo does not support SLI, but with that hardware mod it will. I would suggest you do the mod first to verify that you can actually use SLI, then once you've verified it was successful, order another 6600, or whatever you decide to do.
http://www.anandtech.com/mb/showdoc.aspx?i=2337

They said that Nvidia is issuing the newer drivers with prevention measures, but that's BS. It is a hardware mod, and the chipset sees those bridges as connected, and reports to the driver that it's an SLI chipset, not an Ultra.
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post #8 of 10
The latest nVidia drivers reduce the restriction to run SLi from "identicle" cards to "similar" cards. They still need to be the same card, i.e. GeForce 6600 256DDR, but you can mix and match brands and BIOS revisions now. Best bet is to just buy another one of the cards you already have, though, to avoid any problems that may arise.
    
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post #9 of 10
Thread Starter 
Here's an image with instructions, for all those who wonder:
http://forums.vr-zone.com.sg/showthread.php?t=20409
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post #10 of 10
www.slizone.com for more details.
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