2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @32Gbps-TB3 (Sonnet Break...
 
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2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @32Gbps-TB3 (Sonnet Breakaway 650) + macOS 10.15.3 & Win10 1903  

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ahbosch
(@ahbosch)
Active Member
Joined: 2 years ago
 

Hi all

Wanted to share my success after reading a lot of 16" guides but with no success getting ERROR 12 and eventually got it working. There are some very specific things not explain in other posts that I will explain in mine. I have retested it by formatting Bootcamp and redoing all of it for science 🧬 . (worked first time)

System specs (model inc screen size, CPU, iGPU, dGPU, operating system which eGPU is being used)

MacBook Pro (16-inch, 2019)

  • CPU: 2.4 GHz 8-Core Intel Core i9
  • MEM: 64 GB 2667 MHz DDR4
  • HDD: 2TB SSD
  • dGPU: Radeon 5500M
  • eGPU:Radeon RX 5700 XT 8 GB

 

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

Sonnet BreakAway 350 - upgraded PSU to 650W

 

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

MacOS is plug in and play so skipping this.. 

I would suggest downloading all the guide files below before you start on a USB and installing or copying the files from it. 

Installing Windows + eGPU:

  1. Install Windows 10 1903 V1 in bootcamp
  2. Start windows with no internet
  3. Install Mac Bootcamp drivers 
  4. Run DDU from latest bootcampdrivers.com - Restart
  5. Install latest bootcampdrivers.com- Restart
  6. Install Windows Update 1903 (.295) - Windows will restart a few times
  7. Disable Windows update in services.msc - Restart - reconnect internet
  8. Boot in Mac OS and install bootx64.efi
  9. Do the Port Dance in the following order - the TIMING on the dance messed me about until I got it down pat (Left and Right is distinguished by looking at the laptop screen)
    1. Leave eGPU plugged in TOP LEFT T3 port on power on (Don't think it matters if you plug it in at efi loader, but this worked for me)
    2. Press enter when bootx64 efi loader has detected your eGPU and is counting down
    3. WAIT until Windows Logo shows up AND ... I SAY AND The Windows loading circle has made one rotation...
    4. THEN and only THEN plug it out and move it to the TOP RIGHT side and wait.. 
    5. Wait until Windows is loaded, you can see your back ground, I looked in computer manager and saw the ERROR 12
    6. THEN I moved the eGPU to the ORIGINAL PORT on LEFT side again
    7. Windows freaks out does a few chimes and BAMMM.. your screen flickers get it's brackets and you have the eGPU working

For those who cares, my internal screen stays on and working, I did manage to turn my brightness down and thought the internal screen stopped working, didn't care as long as the dGPU was working, but it was the brightness.

NOTE: If your eGPU stops working or shutdown, mine started over heating inside the enclosure since I upgraded my Macbook Pro from 2018 to 16", just opened the enclosure to get unrestricted air and it calmed down and stopped shutting down. Don't know what the 16" is doing to the eGPU that the board heats up more. 

Benchmarks

Benchmarks are on the Bootcamp side Roll

Will do a proper Mac and Bootcamp Benchmarks and update

 

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @32Gbps-TB3 (Sonnet Breakaway 650) + macOS 10.15.3 & Win10 1903 [build link]  

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King Wang
(@king_wang)
Active Member
Joined: 6 months ago
 
  1. Leave eGPU plugged in TOP LEFT T3 port on power on (Don't think it matters if you plug it in at efi loader, but this worked for me)
  2. Press enter when bootx64 efi loader has detected your eGPU and is counting down
  3. WAIT until Windows Logo shows up AND ... I SAY AND The Windows loading circle has made one rotation...
  4. THEN and only THEN plug it out and move it to the TOP RIGHT side and wait.. 
  5. Wait until Windows is loaded, you can see your back ground, I looked in computer manager and saw the ERROR 12
  6. THEN I moved the eGPU to the ORIGINAL PORT on LEFT side again
  7. Windows freaks out does a few chimes and BAMMM.. your screen flickers get it's brackets and you have the eGPU working

 

Thanks you so much!!! I had the same build with you and spent the whole night (now is 6am in the morning) trying to solve it didn't expect it to be soooooooo precise about the TIMING to plug in and out and in again!!!

Finally works!

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

.

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georgesm
(@georgesm)
Active Member
Joined: 2 years ago
 

@ahbosch, I see you upgraded your Sonnet Breakaway box 350 to a 650 watt power supply. Did you use the Enermax 650 (per Sonnet suggestion) or some other brand power supply? I'm having a hard time finding a Enermax 650. 

 

2017 27"iMac 3.5 MHz RP575 + Sapphire RX 580-TB3 (Breakaway Box 650) + macOS 10.15.5


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ahbosch
(@ahbosch)
Active Member
Joined: 2 years ago
 

@georgesm, Not at all, I just looked for an SFX PSU on Amazon, got a Similiar size one, plug and play. Works great.

 

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @32Gbps-TB3 (Sonnet Breakaway 650) + macOS 10.15.3 & Win10 1903 [build link]  

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georgesm
(@georgesm)
Active Member
Joined: 2 years ago
 

@ahbosch, Is the replacement psu as quiet as the original? Do you mind sharing what model psu you went with? Thanks.

 

2017 27"iMac 3.5 MHz RP575 + Sapphire RX 580-TB3 (Breakaway Box 650) + macOS 10.15.5


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ahbosch
(@ahbosch)
Active Member
Joined: 2 years ago
 

@georgesm,

the noise level is the same, very quiet.

sure here is the Amazone link: SilverStone Technology SST-SX650-G 650W SFX Fully Modular https://www.amazon.com/dp/B075M5T9Q8/ref=cm_sw_r_cp_api_i_7Y0PEbQG9M906

 

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 5700 XT @32Gbps-TB3 (Sonnet Breakaway 650) + macOS 10.15.3 & Win10 1903 [build link]  

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georgesm
(@georgesm)
Active Member
Joined: 2 years ago
 

@ahbosch, Thank you very much for sharing. That's one of the candidates I'd been looking at but was concerned about increased noise. I'm running a Break Away 350 now with a Radeon 580, but am looking at my options when I'm ready to upgrade to something like the 5700XT. I appreciate the feedback.

 

2017 27"iMac 3.5 MHz RP575 + Sapphire RX 580-TB3 (Breakaway Box 650) + macOS 10.15.5


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