Graphics How do you connect 8800 gtx or ultra in Quad SLI mode?

My XFX has nothing in the manual and my motherboard came with only one SLI bridge connector.
(Gcard and MB manuals are still not up to par )

I have searched here and on the net and found conflicting ways of connecting 8800 GTX/ULTRA in Quad SLI mode
These 2 models of Gcards have 2 SLI connectors on each card making you think you need to use 2 SLI Bridge connectors, but I only have one.

One report/thread on the net(can't find link) says to connect 2 8800 cards using 2 bridges to get Quad SLI.

Another, http://forums.nvidia.com/lofiversion/index.php?t46346.html , reckons you only connect one SLI bridge to get into Quad SLI mode, and goes to explain the other connector is for Tri-SLI mode(yet to be implemented,but when with us we can connect 3 Gcards together and the middle one becomes the physics processor)

so what is the correct way of doing this ?

ty

 

You only need/can connect with 1 bridge. The second SLi connector on the top is supposed to be for triple SLi on the 780i chipset AFAIK.

 

ty, you are quite correct
look at the last question on this thread
http://www.nvidia.com/object/8800_faq.html

 

Glad I could help

 

Quad-SLI is only for 7950GX2 cards, last time I checked...

 

You won't be able to run four 8800 GTX in quad, but there might be some news for those that bought 2x7950GX2 soon.

 

??? Sorry, you've completly lost me Tim. I thought that 2x 7950GX2's were Quad Sli...??

 

yeah, but there's no driver for Vista and hasn't been since... ever

 

Oh... Well done nVidia! Quad SLi is old news anyway know... Don't know anyone with 2x7950's and way..

 

so if I connect my 8800 ultras in SLI in VISTA will I be able to use all 4 GPUs as quad SLI ?

 

No. Thats only on the old 7950GX2's, not 8800 cards

A little OT but, Tim, have you got an ETA's on the nVidia 780i's and wether they take triple SLi yet?

 

The 8800 cards only have 1 GPU on them so there's no physical way to achieve QUAD-SLI with them.



I've even seen reports that the Tri-SLI should also work with the 680i chipset.

 

each 8800 ultra has 1 GPU ? I thought they had 2 each ? hence my Quad SLI question

 

I'd have my balls chopped off if I said anything

 

The 7950GX2* was the only nvidia card that 2 cores, none of the G80 cards have 2, only 1, therefore you only have SLI, Not quad sli.

*Thats as far as i know.

Sam

 

Ran across another GFX card with dual GPUs; namely the ASUS Extreme N7800GT Dual http://www.cdr-info.com/Sections/Reviews/Specific.aspx?ArticleId=16077&PageId=0

 

That was the popular one, Asus also made single PCB dual-GPU cards which were the 6800GT and 7800GT duals. I think other manufacturers did similar things with these cards, as I know GigaByte had the 6800GT dual too.

Then there is the 7900GX2 which is basically the same as the 7950GX2, except that it was really an OEM only release and used two G71 7900GT cores instead of two G71 7950GT cores.

 

ok you bunch of knowledgable folks one last question.
So if I connect my ultras in SLI with one bridge in Vista I will be using all it's capabilities(providing the software uses it like Crysis) and need not wait for a driver release(as long as I have the latest driver) ?

the reason I ask is because I thought(wrongly probably) that current drivers don't make use of all the card's capability when both are connected in SLI
my bad

 

Nope. The 7900GX2 was basically 2x 7900 GTX's bolted together..

The 7950GX2 was two Laptop 7900 GTX stuck together via. dual PCB's...

 

I love teh Internets!