Not allowing 2 GTX 760s to work in SLI

[TheCroaker]

It is detecting that there is an SLI Bridge, and that there are 2 GTX 760s, but it is not giving me the option to activate it
Specs
MSI:Z87-G45 Motherboard
MSI GTX 760 4GB
MSI GTX 760 2GB
Intel 4440
Corsair RM 650 PSU

[AddonCustoms]

I don't know much about SLI, but doesn't the memory on the GPU's have to be the same ?

[Guest]

I don't know much about SLI, but doesn't the memory on the GPU's have to be the same ?

Nope, it will default to the graphics card with the least amount of VRAM though. (So he'll only have 2GB of VRAM.) It should still work.

 

Have you tested both the cards individually to make sure they both work?

[AddonCustoms]

Nope, it will default to the graphics card with the least amount of VRAM though. (So he'll only have 2GB of VRAM.) It should still work.

 

ahh good to know.

[TheCroaker]

Nope, it will default to the graphics card with the least amount of VRAM though. (So he'll only have 2GB of VRAM.) It should still work.

 

Have you tested both the cards individually to make sure they both work?

I have and they both do

[Guest]

I have and they both do

What slots are your graphics cards in, and how are you trying to enable SLI?

[TheCroaker]

What slots are your graphics cards in, and how are you trying to enable SLI?

I have them both in PCI-e x16 slots, pci 3.0 aswell

and in the Nvidia Control Panel

[Gene5is]

Check your motherboard's manual to see if the PCI E slots you are using are SLI compatible

[TheCroaker]

Check your motherboard's manual to see if the PCI E slots you are using are SLI compatible

Already did

[TheProfosist]

I don't know much about SLI, but doesn't the memory on the GPU's have to be the same ?

generally for nvidia it usually does,

Nope, it will default to the graphics card with the least amount of VRAM though. (So he'll only have 2GB of VRAM.) It should still work.

 

Have you tested both the cards individually to make sure they both work?

if it will work the 2Gb would definitely have to be in the first slot.

[dragoon20005]

suggest removing the 4Gb card and do a clean uninstall of the current drivers

 

with the 2GB card install the latest nVidia drivers from the nVidia webpage

 

 

shut off pc and install the second card

 

the PC should detect the second card as new hardware

 

then go to the nvidia control panel and see if SLi can be enabled

[TheCroaker]

suggest removing the 4Gb card and do a clean uninstall of the current drivers

 

with the 2GB card install the latest nVidia drivers from the nVidia webpage

 

 

shut off pc and install the second card

 

the PC should detect the second card as new hardware

 

then go to the nvidia control panel and see if SLi can be enabled

I will try this in the morning, thanks 

[DJHoro]

I had this problem and it turns out it was a bad driver. Try downloading the latest driver but not installing it yet. Uninstall your old driver and delete any left over folders. Restart your pc. Clean Install your new driver and hopefully profit.

[TheCroaker]

I had this problem and it turns out it was a bad driver. Try downloading the latest driver but not installing it yet. Uninstall your old driver and delete any left over folders. Restart your pc. Clean Install your new driver and hopefully profit.

Didnt work

[dragoon20005]

did your PC detect the 4GB card when you followed my steps

[dragoon20005]

Try using the previous ver of the driver. One dude comment that the new beta driver has issue with NVIDIA surround. Might be the cause.

[dragoon20005]

Didnt work

are you still able to get SLi working with the previous driver?

[TheCroaker]

are you still able to get SLi working with the previous driver?

nope I am not, was never able to get SLI Running, according to people on the Nvidia Forum you need the same VRam

[matin94]

I don't know much about SLI, but doesn't the memory on the GPU's have to be the same ?

bingo

 

Edit: i thought so too, nvm looks like im wrong

[matin94]

i think this has to be the 4GB vs 2GB card.

[dragoon20005]

I nvidia sli is very strict with gpu types for AMD you can mix two r9 270x of different vram and work fine

[Ezskills]

Nvidia won't let you sli any Gpu with different memory it has to be the same 4gb with 4gb and 2gb with 2gb not 4gb with 2gb only amd crossfire will let you use gpu's with different memory linus said so in the video below.

 

http://www.youtube.com/watch?v=cxc6cb3_y0w

[GamerDude]

Didnt work

Did you move the 2GB card to the first/primary slot as TheProfosist had suggested? Uninstall driver and power off, remove both cards and use only the 2GB card. Power up and install the latest driver, click 'perform a clean install' or something to that effect. If everything is fine, shut down and plug in the 4GB card...and don't forget the SLi bridge. On desktop, you should get a prompt, something to the effect that the system is SLi cappable and to enable it.

If it doesn't work, then perhaps it is a 4GB and 2GB incompatibility issue contrary to what others have said. It should work as I have come across posters who have said they have same model card with different size VRAM to work in SLi.

[dragoon20005]

Did you move the 2GB card to the first/primary slot as TheProfosist had suggested? Uninstall driver and power off, remove both cards and use only the 2GB card. Power up and install the latest driver, click 'perform a clean install' or something to that effect. If everything is fine, shut down and plug in the 4GB card...and don't forget the SLi bridge. On desktop, you should get a prompt, something to the effect that the system is SLi cappable and to enable it.

If it doesn't work, then perhaps it is a 4GB and 2GB incompatibility issue contrary to what others have said. It should work as I have come across poster who have said they have same model card with different size VRAM to work in SLi.

Yea he did the first method and fail

So im guessing it need both to be same vram for sli to work.

[GamerDude]

Yea he did the first method and fail

So im guessing it need both to be same vram for sli to work.

Aw shucks, sorry to hear about this. I'm pretty sure I've read posts by some in other forums who had claimed that they got nV GPU's of same model but different VRAM size to work. That's the thing about SLi, it can be quite unforgiving.....