Nvidia eGPU with Nvidia dGPU (intel iGPU disabled/no optimus)?  


New Member
Joined: 4 months ago
Posts: 2
February 5, 2019 1:47 am  

Anyone know about running an eGPU with an Nvidia card on a Windows 10 system that has a weaker Nvidia 1050ti  dGPU? (New enough to use the same driver).

Can it run with the dGPU in discrete mode without the intel iGPU being enabled ? Or is the iGPU required to make the eGPU run like a laptop running with Nvidia Optimus?

Without the Intel enabled the Nvidia driver runs in full mode and has full control of the display settings (with Intel iGPU enabled that section of the Nvidia settings is disabled and instead is handled by the Intel driver).

Curious if it works better/worse/at all this way as normally I like to keep the system in discrete mode so the intel isn't used at all (battery life is not a concern for me).

This topic was modified 2 weeks ago

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts

Famed Member Admin
Joined: 2 years ago
Posts: 3554
February 5, 2019 2:13 pm  

This is possible but it depends on how your laptop is configured. Does the BIOS give you the option to disable the iGPU? Also keep in mind Windows 10 default graphics drivers for the laptop Nvidia dGPU may be work well to run both at the same time. You'd likely encounter error 43 on the Nvidia dGPU when there's an active Nvidia eGPU. The best approach to keep both running with one version of drivers is to use DDU and uninstall all Nvidia graphics drivers and disable Windows auto-install of graphics cards. Then proceed to install the latest Nvidia drivers when both Nvidia dGPU and eGPU are present.

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New Member
Joined: 3 weeks ago
Posts: 2
February 8, 2019 10:24 pm  

If you're using the internal display, I don't think you can disable the iGPU because the eGPU needs it to render the image on the display, just like an internal dGPU would. Of course, if you're using an external display, it's connected directly to the eGPU, and doesn't need the iGPU.

I've been testing this setup using an ASUS Zenbook Pro with a 1050ti and an Aorus 1070 Gaming Box. The trick is finding an Nvidia driver version that works with both the notebook 1050ti and the external desktop GPU. I've had the best results just using the latest notebook driver from the ASUS. When I plug in the eGPU, there's an Nvidia icon in the tray that lists both GPUs, but indicates that the 1050ti is disabled. When I unplug it, the external GPU disappears and the 1050ti re-enables.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts