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Display driver crashes with sli

currob

currob

currob

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Joined
15 Nov 2011
Posts
901
Location
Stafford
Hi, I have 2x 780ti installed which work fine on their own and together when not in sli enabled mode, however when sli mode is enabled I get random display driver crash problems. Could the differing clock speeds be the problem? The cards and clocks are:

Gigabyte 780ti core 1084Mhz mem 7000Mhz
Inno3d 780ti core 1006Mhz mem 7200Mhz

I have the same issue with the current and previous NVidia drivers and have tried both power management modes and both NVidia recommended rendering and force alternate frame rendering settings.

I have the 6 pin extra motherboard connector for pcie connected.

When I try to synchronise the clock speeds with evga precision x the changes made only affect the boost clocks on the cards.

Any ideas? Am I barking up the wrong tree with the clock speeds possibly being the issue?

The specs are the yellow one's in my sig and I am running win7 64bit, recent install, never had any other vga drivers installed etc..
 
Have you tried msi ab?? I thought that it would match clock speeds automatically but I'm not sure. Try ab and make sure synchronise cards is checked.

Also you don't need the 6 pin power for your motherboard unless you're going to at least triple sli
 
Have you tried switching the cards around?

Make sure to use the same coloured PCI-E slots and reseat the SLI bridge. (maybe change that around to)

Clocks default to the slowest usually.
 
Downloading ab now. I have tried each card in each slot and I have tried 2 sli bridges.

Using hwinfo64 to monitor clocks.

Will restart in a min and see if ab works
 
Ok, running ab now and the adjustments I make are only affecting the boost clocks again, base clock remains unchanged.
 
My error ! The software I was using to monitor clock speeds is not updating :
I am running gpu-z now and the clocks are indeed changing, gpu-z is showing the new clock speeds and what I was using (hwinfo64) is continuing to show the default clock speeds. :D

So back to the drawing board for the display driver crashes then :(
 
Thanks, got them synced, will wait and see now if I get anymore display driver crashes, thanks for replies. :)
 
I have found and can download the bios for the gigabyte version I have installed, could I flash the inno3d with that bios to make them the same?
 
Ok, I don't know how to compare the pcb or flash the bios, thanks for replies anyway, will wait and see if the crashes continue and if they do then lesson learned the hard way, will sell the 2nd card and move on.
 
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