quick question about SLI technology

[frankyk]

could you put a 7800 with a 6800 or it has to be both the same card in the pci-express slots?

 

[NitrouseXpress60]

same card

 

[DejaWiz]

same card, same manufacturer. for now....

nVidia is probably going to be releasing a driver version that allows different manufacturers (I'll assume that the clock speeds have to be the same though, for those wanting to mix something like an eVGA with a BFG OC).

Some people have already been able to mix manufacturers by flashing the BIOS from the same manufacturers image on both cards.

 

[a400tdh]

ur all wrong, it has to have the SAME BIOS then it'll work

 

[DejaWiz]

ur all wrong, it has to have the SAME BIOS then it'll work

Umm, please read my previous post. And then go out to Google and do a search for current SLI requirements.

Here, this will get you started:
http://www.slizone.com/page/slizone_faq.html#c3

Can I mix and match graphics cards?
No. NVIDIA currently doesn't support SLI on two different models or from different vendors. SLI supports configurations with the same model (i.e. 6800 Ultra) from the same vendor (Vendor XYZ). A common misconception about SLI is that the BIOS revision has to be identical between the cards. This is not true. A manufacturer can revise the BIOS without affecting SLI. NVIDIA does however recommend that customers confirm SLI compatibility with the manufacturer before making a purchase.

You can try and fool the SLI requirement by flashing the BIOS on each different card to the same manufacturer. Some have done this and succeeded. Others have failed. The BIOS revision number has nothing to do with it.