# eGPU not appearing as an option

**URL:** <https://forums.chaos.com/t/egpu-not-appearing-as-an-option/109347>\
**Category:** Issues\
**Created:** [March 17, 2022, 2:43pm UTC](https://forums.chaos.com/t/egpu-not-appearing-as-an-option/109347 "2022-03-17T14:43:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![tricky](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/tricky/32/56653_2.png) [@tricky](https://forums.chaos.com/u/tricky)\
**Post date:** [March 17, 2022, 2:43pm UTC](https://forums.chaos.com/t/egpu-not-appearing-as-an-option/109347/1 "2022-03-17T14:43:57Z")

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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?

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**Author:** ![Muhammed\_Hamed](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/muhammed_hamed/32/73779_2.png) [@Muhammed\_Hamed](https://forums.chaos.com/u/Muhammed_Hamed)\
**Post date:** [March 21, 2022, 1:56am UTC](https://forums.chaos.com/t/egpu-not-appearing-as-an-option/109347/2 "2022-03-21T01:56:09Z")

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Hi @tricky and welcome back 🙂

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

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**Author:** ![luz\_rodriguez](https://avatars.discourse-cdn.com/v4/letter/l/f475e1/32.png) [@luz\_rodriguez](https://forums.chaos.com/u/luz_rodriguez)\
**Post date:** [April 11, 2022, 1:46pm UTC](https://forums.chaos.com/t/egpu-not-appearing-as-an-option/109347/3 "2022-04-11T13:46:19Z")

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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.

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**Author:** ![Muhammed\_Hamed](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/muhammed_hamed/32/73779_2.png) [@Muhammed\_Hamed](https://forums.chaos.com/u/Muhammed_Hamed)\
**Post date:** [April 12, 2022, 10:01pm UTC](https://forums.chaos.com/t/egpu-not-appearing-as-an-option/109347/4 "2022-04-12T22:01:56Z")

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> [@luz\_rodriguez](#):
>
> 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.

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