2017 13" MacBook Pro [7th,2C,U] + GTX 1070 @ 32Gbps-TB3 (Sonnet Breakaway 550) ...
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2017 13" MacBook Pro [7th,2C,U] + GTX 1070 @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.13.5 & Win10 [whiskey_1130]  


Eminent Member
Joined: 3 years ago

System specs  (model inc screen size, CPU, iGPU, dGPU, operating system)

- mid-2017 13" MacBook Pro nTB
- i5-7360u
- Intel Iris Plus 640
- macOS 10.13.5 + Windows 10 (on Samsung T5 portable SSD)

eGPU hardware  (eGPU enclosure, video card, any third-party TB3 cable, any custom mods)

- Sonnet Breakaway Box 550

Hardware pictures (note: require 5+ posts for "attach files" button to appear. Or can link from say http://imgur.com )

- Coming Soon!

Installation steps (what did you do to get it all going?)

Followed the guide by @itsage

  • Install Windows 10 ISO through Bootcamp Assistant [in macOS].
  • Install DDU to remove default AMD/Nvidia graphics drivers and disable Windows automated GPU driver installation [in Windows].
  • Install latest Intel iGPU drivers then create a manual Restore point just in case there's boot up issues [in Windows].
  • Install rEFInd boot manager [in macOS].
  • Mount EFI partition and create a subfolder called "custom" [in macOS].
  • Download and copy apple_set_os.efi into the "custom" folder inside EFI volume [in macOS].
  • Shut MacBook Pro down then connect eGPU to a Thunderbolt 3/USB-C port.
  • Hit ENTER on apple_set_os.efi volume at rEFInd screen then boot into Windows [boot selection].
  • Open Device Manager to confirm iGPU and Microsoft Display Adapter are present and active [in Windows].
  • Install Nvidia graphics drivers then restart [in Windows].
  • Boot into Windows following apple_set_os.efi at rEFInd boot selection screen.

(Include a CUDA-Z or AIDA64 bandwidth pic. Optional: Valley, 3dmark, noting if it's on internal/external LCD )

*eGPU External Display*






FFXIV Stormblood Benchmark


Comments (eg: how has the eGPU improved your workflow or gaming?)
- I've reduced my office from a full sized gaming rig down to a simple Sonnet with my MacBook Pro nearby.

2018 13” MacBook Pro TB + RX 580 + Sonnet Breakaway 550

2017 13" MacBook Pro [7th,2C,U] + GTX 1070 @ 32Gbps-TB3 (Sonnet Breakaway 550) + macOS 10.13.5 & Win10 [build link]  

New Member
Joined: 3 years ago

Do you think the dual core is a bottleneck for gaming? Or will this setup run something like Forza Horizon 4 1080p with high settings 60fps?

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.


New Member
Joined: 1 year ago


How and when do you connect the SSD drive?. I have a similar setup with just 2 thunderbolt ports and I am not able to have both the egpu and anything else connected at the same time.

2017 13" MacBook Pro [7th,2C,U] no touchbar + GTX 1070 @ AORUS Gaming Box

2017 13" MacBook Pro [7th,2C,U] + GTX 1070 @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 2004 [build link]