Cannot enable SLI?

[Nevakonaza]

Hey guys,

Have 2 GTX 970s on a Z77X-UD3H motherboard.

• GPU 1 - Galax GTX 970 EXOC Black Edition
• GPU 2 - KFA2 GTX 970 EXOC infin8 Black edition

Both have 4GB of Vram,They're essentially the same card on the outside just rebranded Galax-KFA2 .

Im having an issue enabling SLI,The option to enable it is greyed out,i have connected 2x hard pcb sli bridges to the card

Now ive looked on GPUZ and both cards have different BIOS numbers,which i expected as they're slightly different clocked cards i think,Do you guys think it could be a BIOS issue?
where do i even find the latest bios for these cards as i see no option on both of their websites to download the latest bios?

Of course im going to try reseating the cards,reseating the sli bridges,try only one sli bridge,check mobo bios is latest etc,but going to have to do that tomorrow now,just wondering if any of you guys had any more ideas or experienced this before.

cheers.

 

[Nevakonaza]

Thanks for all replies folks,Well its wierd i taken off one SLI connector as i had both connected,then after i restarted and windows downloaded an update and installed it,Now i can enable SLI.

Single 970

SLI 970

3D MARK Single

3D MARK SLI

 

[Nevakonaza]

I'm glad my answer fixed it for you but it's not weird at all: the second SLI connector is for when you are using 3 way or 4 way SLI.

Well removing the second sli bridge and restarting the pc seems to have triggered windows to download an update then bam,option to enable SLI was there

Just wondering,in games is it only able to make use of 4GB of vram or both the 4gb combined so 8GB?..because i noticed in GTA V it shows using just over 4gb of vram of 8 available?