How To: eGPU-Accelerated Internal Display in macOS
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How To: eGPU-Accelerated Internal Display in macOS  

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Estimable Member
Joined: 5 years ago

@mac_editor, @ricc thanks! I see that purge wrangler links to when it talks about internal screen acceleration. Since I had the ghost plug I just used that, but it sounds like this is a better solution.

iMac 2013 10.14.1, Macbook Air 2013 10.11, MBP 2016 13" 10.13.6 , HP 4530s 10.11, node lite, DA-2 PSU w/mod, PE4L 2.1b expresscard34, GTX460,1050Ti,1060,1070/Ti RX470,560,580

2016 13" MacBook Pro [6th,2C,U] + GTX 1060 @ 32Gbps-TB3 (AKiTiO Node Lite) + macOS 10.13.6 [build link]  

ricc and mac_editor liked
Kubo Yashiharu
Eminent Member
Joined: 3 years ago

I don't understand
when I drag the white bar to the eGPU display, my iMac monitor changed to eGPU display.
How can you turn the eGPU display to primary while the iMac internal monitor still displaying dGPU?

Mac Mini 2018, MacOS 11.6 with Windows10 21H2, Akitio Node, Rx580
automate-eGPU.efi (2019), HackFlags 0x600

MacBook Pro mid-2014, MacOS 10.13.6, Akitio Node, Rx580
purge-wrangler, purge-nvda, SwitchResX, iStat, TB2

Steven M Galli
New Member
Joined: 3 years ago

Used this code on a 2015 iMac and a sonnet encloser with rx  580 works flawlessly

MacBook Pro (16-inch, 2019), 6-Core Intel Core i7, 32 GB 2667 MHz DDR4, AMD Radeon Pro 5300M, Windows August 13, 2019—KB4512508 (OS Build 18362.295, Razer Core X, Vega 64

B0V1R the guy who has a broken keyboard
New Member
Joined: 7 months ago

I don't have space in my desk for both of my monitors and I don't wanna waste the iMac's internal screen. It seems that the EGPU only outputs to the monitor and the internal monitor is handled by the internal gpu.  if I try to disable the internal gpu, it defaults to the microsoft basic display adapter instead of the egpu. I really want to use the EGPU without the need of an external monitor no matter the performace

Core X 5700xt | iMac 27 5k i7 10700k 5500xt, iMac 21.5 4k i5 7400 560 .

Founder Admin
Joined: 5 years ago

@b0v1r_the_guy_who_has_a_broken_keyboard, You'd need a functional dGPU in order to use eGPU loopback mode with the iMac. Download and install the modified drivers from so that both the Radeon dGPU and eGPU can work with one set of drivers.


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2021 13" ASUS ROG Flow X13 (RTX3050Ti) [R5K,8C,H] + RTX 3080 @ 64Gbps-XG (XG Mobile) + Win10 20H2 [build link]  

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