I have a late 2016 15” MacBook Pro with a Radeon Pro 455 with 2GB VRAM.
I have upgrade to macOS High Sierra because its support external GPUs.
I have purchased Sonnet eGFX Breakaway Box with 550W Power Supply and installed NVIDIA GEFORCE GTX 1080.
I cannot get this setup to use the eGPU to power the internal screen.
How can I do this? Is this possible?
Best Answer
Okay, first things first. Yes, this is possible, but at present it’s not officially supported yet. Apple did demonstrate an iMac Pro doing this back in December, so we know official support will come, it’s just not here yet.
If you want to do this now rather than wait, a member of the eGPU forums has successfully done this. Below are the steps involved, but please read them carefully as you should be aware it does come with potential risks!
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