Cannot enable SLI

[GarrisonD]

Hello,

 

Today I did a partial rebuild of my system. By that I mean I replaced my CPU, motherboard, and ram but did not replace my two MSI 980ti Lightning’s. Went this route while I’m waiting to hopefully get my hands on a GPU sometime next year. However after completing the build and firing up the system I checked to make sure everything was in working order. I noticed that SLI is listed as disabled in hardware monitor and when I go to Nvidia control panel to turn it on, there is no SLI menu option. The cards drivers say they are up to date.

 

Specs:

Ryzen 5800x

ROG Crosshair vii

2 MSI 980ti lightning

windows 10 

 

[Estiar]

1 Are both GPUs showing up on HWmoniter or Task Manager?

2 Do you have an SLI bridge installed?

3 Are the moniters plugged into the top GPU (The one closest to the CPU)

4 Are both GPU Powered?

[GarrisonD]

3 minutes ago, Estiar said:

1 Are both GPUs showing up on HWmoniter or Task Manager?

2 Do you have an SLI bridge installed?

3 Are the moniters plugged into the top GPU (The one closest to the CPU)

4 Are both GPU Powered?

Thanks for the reply. The answer is yes to all of your questions. Both GPU’s show up like they’re ready to go but I can’t enable SLI. There’s not even the option to enable it in control panel that section is gone. 

[itisme911]

Are your motherboard drivers/BIOS up to date? Some newer motherboards support for SLI is also terrible, older revisions of motherboard BIOS may also work. Does it even officially support SLI?

 

You've searched through control panel menu? Configure Surround, Physx

[Shimo Okami]

Which model of crosshair vii is it? Cause iirc, only the formula and extreme support sli, while the hero and dark hero do not.

[GarrisonD]

37 minutes ago, itisme911 said:

Are your motherboard drivers/BIOS up to date? Some newer motherboards support for SLI is also terrible, older revisions of motherboard BIOS may also work. Does it even officially support SLI?

 

You've searched through control panel menu? Configure Surround, Physx

Thanks for the reply. The board does list SLI as being supported. It was the reason I bought this board, knowing I wanted to use SLI till I can get my hands on a new card. I have searched through the control panel, on the section for configure surround, physX there is no SLI options. On my old build this is the same menu I went to for enabling SLI but now it’s just not there

 

Also I did update the BIOS/drivers when first thing when I powered up 

[GarrisonD]

13 minutes ago, Shimo Okami said:

Which model of crosshair vii is it? Cause iirc, only the formula and extreme support sli, while the hero and dark hero do not.

It is a formula. SLI is listed as a feature which is why I specifically went with this board 

[Shimo Okami]

Hmm okay, just wanted to make sure. The option seems to not show up if there's an issue somewhere that would prevent sli from working correctly, do you possibly have another sli bridge to test with?

[GarrisonD]

13 hours ago, Shimo Okami said:

Hmm okay, just wanted to make sure. The option seems to not show up if there's an issue somewhere that would prevent sli from working correctly, do you possibly have another sli bridge to test with?

Thanks for the reply. Tried both the new SLI bridge that came in the box and my old SLI bridge and neither of them work 

[Shimo Okami]

4 hours ago, GarrisonD said:

Thanks for the reply. Tried both the new SLI bridge that came in the box and my old SLI bridge and neither of them work 

Odd... now, you said both cards are showing up in hwmonitor/task manager, but are either of them by chance giving any errors under gpuz or anything?

[GarrisonD]

41 minutes ago, Shimo Okami said:

Odd... now, you said both cards are showing up in hwmonitor/task manager, but are either of them by chance giving any errors under gpuz or anything?

Problem ended up being that I was running an m.2 too and I guess I can’t do that

[Shimo Okami]

Oh. That is odd. I never would have guessed a pci bandwidth cap would have been the issue. But hey, I'm glad you figured it out at least!