GTX 760 SLI Not Working

[StillAzure]

So I was just kind of curious how well SLI runs on my system, I grabbed a spare GTX 760 that's just, lying around and decided to test SLI out, 5 hours in, I can't even get SLI to work yet.

I have an EVGA GTX 760 4GB originally installed on my Z87-PRO, which is an SLI ready motherboard, and I just popped this 2GB card in which should still theoretically work in SLI, but no.

I have re-installed driver using DDU from Guru3D first, both cards showed up fine in Device Manager, they showed up in the NVIDIA CP as well, but still no SLI enable option in it.

I've tried literally everything, re-seating cards, flipping/re-seating SLI bridge, try using only one card to see if one of them is malfunctioning or not, HyperSLI, Diffferent SLI Auto.

Nothing worked. Hopped on Reddit /r/buildapc IRC, no one had any ideas.

Asking here is probably my last resort, if nothing works out, I guess I'll just give it up.

[dragoon20005]

So I was just kind of curious how well SLI runs on my system, I grabbed a spare GTX 760 that's just, lying around and decided to test SLI out, 5 hours in, I can't even get SLI to work yet.

I have an EVGA GTX 760 4GB originally installed on my Z87-PRO, which is an SLI ready motherboard, and I just popped this 2GB card in which should still theoretically work in SLI, but no.

I have re-installed driver using DDU from Guru3D first, both cards showed up fine in Device Manager, they showed up in the NVIDIA CP as well, but still no SLI enable option in it.

I've tried literally everything, re-seating cards, flipping/re-seating SLI bridge, try using only one card to see if one of them is malfunctioning or not, HyperSLI, Diffferent SLI Auto.

Nothing worked. Hopped on Reddit /r/buildapc IRC, no one had any ideas.

Asking here is probably my last resort, if nothing works out, I guess I'll just give it up.

sorry to break the news

 

SLi will refuse to work with same card with DIFFERENT amount of VRAM

[Tea1337]

I don't think you can SLI cards with different amounts of VRAM, I may be wrong.

[StillAzure]

Okay, what, I thought cards with different VRAM works, just limited to the least available amount.

[79wjd]

sorry to break the news

 

SLi will refuse to work with same card with DIFFERENT amount of VRAM

I thought SLI would just use the lower amount 

[StillAzure]

Actually, that gave me an idea, it could be how I ordered the cards wrong, maybe if I put 2GB card in the first slot- be back.

[dragoon20005]

http://linustechtips.com/main/topic/136964-not-allowing-2-gtx-760s-to-work-in-sli/

 

read this tread

 

another user also the same trouble

 

and even nVidia tech support has confirm this stupid issue

 

Thanks nVidia

 

AMD X-Fire works even with 2GB 270X and 4GB 270X

 

 

Actually, that gave me an idea, it could be how I ordered the cards wrong, maybe if I put 2GB card in the first slot- be back.

 

[StillAzure]

/flips rigs and everything over.

WELL, ALL THAT 5~6 HOURS FOR NOTHING I GUESS.

;-;

 

Edit: Forgot to add, switching order did not help.

[StillAzure]

HOLY BALLS I GOT IT WORKING.

http://puu.sh/9vJy7/25def6c8ff.png

DifferentSLIAuto to the rescue! Turns out the program works, i just had to disable signature enforcement thing.