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How to enable SLI 780ti

TheGentry

TheGentry

TheGentry

Associate
Joined
13 Apr 2009
Posts
1,221
So bought my 2nd 780ti b-grade

I have tested both my cards on there own and both seem to be working fine.

When i go into the Nvidia Control panel under 3D settings there is no SLI option.

I have tryed 2 different SLI bridges,
I have uninstalled drivers ran ccleaner and reinstalled drivers
I have checked windows is updated and bios is updated

Only thing that seems to go wrong is when i dont have the SLI bridge it runs normal when i put the SLI bridge on the drivers crash but then recover after.

gpu.png


Here is the cards, there screen now black screens even did it when trying to right this so i plugged my hdmi to the motherboard to finish this post also, my Start X and normal windows start icon are running at same time which has never happened before dont know if relevant but hey.
 
Assuming your motherboard does have SLI support do you have them in the right slots? on most boards only certain slots/combinations will work in SLI mode.
 
If your mobo supports SLI AND you have gone to the correct section in the Nvidia control panel - and this has resulted in both cards not being present it may well be a case of the second PCI slot not functioning.

Please let us know the Mobo, and what option you are going into in Nvidia control panel

cheers
 
From what you've put in this thread http://forums.overclockers.co.uk/showthread.php?t=18657611, the first questions I'd be asking are:

Have you got all the power connectors plugged in for both cards?
Have you got the cards in the right slots to give enough bandwidth (Crossfire will work with any PCI-E arrangement, SLI needs PCI-Ex8 minimum). On the Z97X-SOC, this means the first and third PCI-E slots need to be used, as the second and fourth provide PCI-Ex4 only (worth double checking your motherboard manual - I may be wrong on this).
 
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