2014 15" MacBook Pro (GT750M) [4th,4C,H] + GTX 780 Ti @ 16Gbps-TB2>TB3 (Sonnet Breakaway 550) + macOS 10.14.6 & Win10  

System specs  

SCREEN SIZE: 15,4 inches  

CPU:   i7 4870HQ

IGPU: Intel Iris Pro

DGPU:Nvidia Geforce 750m

OS:    macOs Mojave 10.14.6, Windows 10 build 1903

eGPU hardware 

Egpu Enclosure: Sonnet Breakaway Box 550, Apple TB3 to TB2 adapter, TB cable

Graphics Card:  Asus Nvidia GTX 780 Ti Direct CU II 3GB  

Installation steps 

MOJAVE : Step 1: Disable SiP

Step 2: after boot  Install purge-wrangler.sh  https://github.com/mayankk2308/purge-wrangler/wiki/Beginne r's-Guide

Step 3: reboot and 780ti fully supported and recognized. There is no need to use Purge Nvda. You can use laptop Screen (Use finder to find the application, right click, Prefer Egpu option in Mojave) , or external monitor for more perfomance.

WINDOWS 10: Step 1: Plug in your enclosure

Step 2: Boot

Step 3: Install latest Nvidia desktop drivers and you can normally use external monitor with the egpu. if you want, you can DDU 750m bootcamp drivers before installing the drivers for the 780ti egpu, but for me, it made no difference.

Benchmarks Mac Os Mojave 10.14.6 VALLEY internal monitor  58,3 fps (1440x900 extreme preset) external monitor 60,6 fps (1920x 1080, extreme preset)

Comments 

I noticed a big performance difference between internal and external monitor. I was playing dead effect 2 on MacOS x and I had 93 FPS average on internal screen (1400x900 resolution). When I plugged my egpu directly to an external 1080p monitor, FPS went straight away to 140. If you want to have the best possible gaming experience with your 780 ti Egpu, you need to run games on Bootcamp. Driver optimisation is much better in windows 10.

After 2 weeks edit: In some rare cases, when benchmarking or heavy gaming sessions, egpu crashes under  macOS. In windows, everything is absolutely stable. 

Internal 1440x900

external 1920x1080

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