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View Full Version : BFG 7800 GTX OC & Leadtek PX6800 Ultra TDH in SLI

d.chatten
10-30-05, 10:47 AM
Does anyone know if it's possible to run a BFG 7800 GTX OC and a Leadtek PX6800 Ultra TDH in SLI, also is SLI possible on a ASUS P5WD2 Premium motherboard or is SLI still not yet possible on the ASUS P5WD2 Premium.
andyl33t
10-30-05, 10:52 AM
no, the cards have to be 100% identical and no, it cannot run SLI
Bios24
10-30-05, 11:24 AM
100% brand + model identical? or 100% chipset identical? ie- Can you run a Leadtek 6800U and an XFX 6800U in SLI?
andyl33t
10-30-05, 11:37 AM
the brand has to be the same.
Rattle
10-30-05, 11:39 AM
I think its the actual cards BIOS that needs to be the same correct ?

So technically if you flashed both cards to the same bios would it work ?
andyl33t
10-30-05, 11:58 AM
hmm yeah i suppose that would work.
consumer9000
10-30-05, 12:25 PM
the brand has to be the same.

Actually this is incorrect. The new 81.85 and newer drivers support mismatched SLI, which allows two different cards (of the same chipset and RAM amount) to run in tandem. For example, one tester was running an eVGA 7800GTX (430/1200) with an XFX 7800GTX EE (490/1300) without any issues. Only earlier drivers require identical boards and clock speeds. :)
andyl33t
10-30-05, 03:00 PM
cool, neva knew that. always thought they had to be the same.
Quailane
10-30-05, 03:59 PM
Actually this is incorrect. The new 81.85 and newer drivers support mismatched SLI, which allows two different cards (of the same chipset and RAM amount) to run in tandem. For example, one tester was running an eVGA 7800GTX (430/1200) with an XFX 7800GTX EE (490/1300) without any issues. Only earlier drivers require identical boards and clock speeds. :)

Still needs to be the same type of card though.
Enigma422
10-30-05, 04:43 PM
To sum things up, to run SLI with the latest 80 series drivers you need two of the same type of card (i.e. 7800GTXs only or 6800Ultras only) so putting two different type cards like in the case you are asking will not work. To your other question, for now the 955X does not support SLI, but the upcoming 975s are suppose to.
CCUABIDExORxDIE
10-30-05, 04:48 PM
also, the new 80 drivers allow for mismatched ram size cards to sli, like a 256mb and a 128mb card can now SLI.