SLI option not present in Nvidia Control Panel

Gaming and Visualization Technologies General Topics and Other SDKs GPU - Hardware
1

I have Dell Precision 7920 workstation. I have installed two RTX GeForce 2080 Ti graphics cards (blower style with only one fan, ASUS Turbo model) on two Gen 3 PCIe x16 slots on the motherboard. The motherboard layout can be seen here:

https://www.dell.com/support/manuals/us/en/19/precision-7920-workstation/precision_7920_om_pub/teradici-pcoip?guid=guid-d42c1e76-8c1c-4065-8807-e8ab56293c2e&lang=en-us

I have also purchased Quadro NVLink bridge (2-slot) from the Nvidia store (which is actually for Quadro 6000 but is tested to work with RTX GeForce 2080 Ti cards from NVIDIA NVLink Bridge Compatibility Chart)

However, I still do not see SLI option in Nvidia control panel. I think the reason for this is that the dell 7920 motherboard seems to be Quadro SLI ready but not GeForce SLI ready as seen from link:
https://www.nvidia.com/object/sli-certified-systems-and-motherboards.html

Is it possible to make my motherboard GeForce SLI ready?

I am running Windows 10 and installed latest Nvidia drivers and also updated the bios to the latest version.

Thank you.

2

hi omsrisagar,i have the same situation, do you have any solution now? thanks!

3

Sorry luyg1 I could not find the solution. I read at some places that Dell allows SLI support on 7920 workstation only for Quadro cards (in Windows OS). There are some solutions that override this checking, but unfortunately I couldn’t find success with them.

Finally I moved to Ubuntu where I can see that the NVLink/SLI is fully supported and working. So I’m sticking with it for now.

4

Hi similar issue here. We have some HP G4 Z4 Core i9 7900X workstations. These are fine since they allow compact dual slot dual gpu setup plus additional pcie 8x slot for special purpose hardware. We require this for some demo setups.

Equipped them with 2x slim RTX 2080 Ti from Gigabyte plus Quadro RTX HB nvlink bridge. Buying Quadro RTX is not necessary and quite price intensive since Geforce fulfils our requirements.

System is certified by HP for Quadro SLI, but it is not mentioned that Geforce would not work… Geforce SLI cannot be enabled / does not show up in the NVIDIA Control panel.

Additionally there comes the missing P2P over PCIE on RTX cards into place which is only available with NVLINK!!!

With nvidia-smi the links are shown as enabled and even SLI capable - see info below.

So I thinke there is no technically reason refusing this option. Is there any beta driver or tweak available just to enable this upon our own risk?

Thanks, in hope of a solution,
Enrico

C:\Program Files\NVIDIA Corporation\NVSMI>nvidia-smi.exe nvlink -s
GPU 0: GeForce RTX 2080 Ti (UUID: GPU-e91516bc-6040-c0fd-e07e-50a1b08f12fd)
Link 0: 25.781 GB/s
Link 1: 25.781 GB/s
GPU 1: GeForce RTX 2080 Ti (UUID: GPU-6396582e-aeb1-a471-068c-07d510b519be)
Link 0: 25.781 GB/s
Link 1: 25.781 GB/s

C:\Program Files\NVIDIA Corporation\NVSMI>nvidia-smi.exe nvlink -c
GPU 0: GeForce RTX 2080 Ti (UUID: GPU-e91516bc-6040-c0fd-e07e-50a1b08f12fd)
Link 0, P2P is supported: true
Link 0, Access to system memory supported: true
Link 0, P2P atomics supported: true
Link 0, System memory atomics supported: true
Link 0, SLI is supported: true
Link 0, Link is supported: false
Link 1, P2P is supported: true
Link 1, Access to system memory supported: true
Link 1, P2P atomics supported: true
Link 1, System memory atomics supported: true
Link 1, SLI is supported: true
Link 1, Link is supported: false
GPU 1: GeForce RTX 2080 Ti (UUID: GPU-6396582e-aeb1-a471-068c-07d510b519be)
Link 0, P2P is supported: true
Link 0, Access to system memory supported: true
Link 0, P2P atomics supported: true
Link 0, System memory atomics supported: true
Link 0, SLI is supported: true
Link 0, Link is supported: false
Link 1, P2P is supported: true
Link 1, Access to system memory supported: true
Link 1, P2P atomics supported: true
Link 1, System memory atomics supported: true
Link 1, SLI is supported: true
Link 1, Link is supported: false

5

I am encountering exactly the same problem, did you even find a solution please?

6

Has anyone found a solution to this issue. I am having the same problem where SLI configuration will not show in the nvidia console.

My motherboard is an X10SRA and CPU is E5-2697 v4 and both are supported.

thank you!