eGPU not appearing as an option

V-Ray V-Ray GPU Issues
1

First post in a loooong time.

I have my laptop hooked up to an eGPU, and this works fine in games etc. However, VRay GPU doesn’t see it in the devices select menu: it only sees the built in 3070ti in RTX mode, or my 3070ti and 12th gen CPU in CUDA mode.

Any suggestions?

2

Hi @tricky and welcome back :slight_smile:

Do you have a monitor connected to your eGPU?
Are you using Thunderbolt 4 on your laptop?
What GPU enclosure do you have?

Best,
Muhammed

3

I’d like to jump into this conversation…

I have the Razor Core X eGPU. Whenever I connect it, it takes over the internal laptop RTX3060 which is disabled. I did read about how to turn off windows automatic hardware drivers install option, then manually installing the geforce driver so both the internal card and eGPU will be “active”. I haven’t done this yet however. I’m wondering if there is a better process to get both cards to be active and usable with vray. Thanks.

Also - I’d love the option to also connect this to my desktop from time to time. Same connection directly from Core X thunderbolt to desktop thunderbolt, no monitor connection to either laptop or desktop.

4

You will need to make sure the connection on the PC/Laptop is Thunderbolt 4 if you have a high-end GPU, and thunderbolt 3 should work as well with a slightly lower performance.

I replied to your other thread, this depends on your laptop. You will need to take a look at BIOS I think, and you might need a monitor connected to the external card. Let me know how this goes

Best,
Muhammed