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Tough Question - SLI / Unlocking Pipes!

S

SRoode

Senior member
I have been patiently waiting for PCI-Express based 6800GTs to become available, and while I was waiting, I looked at some plain 6800's. Then a question hit me.

In order to enable SLI mode for video cards, they have to be the "same" (same type of card). If I bought 2 6800's, (like this one http://www.newegg.com/app/View...14-127-149&depa=0) and tried to unlock pipelines / shaders, what would happen if one card unlocked more than the other? Could I still put them in SLI mode? I would put the card that unlocked more as the #1 card, and the card that unlocked less as #2.
 
you can only unlock so far. which would be 2 pipes. so either you get 2 or you dont. if one doesnt then the other most likely wont either

and dang thats a really small cooler for a 6800
 
I thought the 6800 was 12 pipes, so you could try to unlock 4 on each right? But let's say one unlocks, and one does not... Can you enable SLI?
 
ah yes sorry 4. you might beable to. the driver will probably complain though.

course if you bought 2 cards at the same time from the same place, and one doesnt unlock then its highly unlikely the other will unlock
 
My question isn't can they unlock, my question is, can you SLI two 6800s with different amounts of pipelines open?
 
probalby not, considering that for SLI, even the clockspeeds of the two cards have to be identical so the driver can load-balance correctly. i'd say its not possible with a different number of pipes. just like its not possible to run a 6800 in SLI with a GT or ultra.

-Vivan
 
Vshah - Thanks for the input... I was thinking that too, but all I heard before was the cards had to be the same.

Computer Man - The PCI-Express ones are... Click my link on my first post... You'll see the SLI connector on the top of the card.

UGH!!!! I have my ASUS AN8-SLI Deluxe Motherboard and nothing good to put in it... I don't want to go 6600GT.
 
i dont think anyone has actually tried it cus i dont think there are many people taht can afford two of the same card right now with all the price hikes on all these cards nowadays
 
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