How to fix Code 12?! /6800xt/ MacBook Pro 13/ Razer core x
 
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How to fix Code 12?! /6800xt/ MacBook Pro 13/ Razer core x  

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Kieran Barker
(@kieran_barker)
Active Member
Joined: 4 months ago
 

Just managed to get my hands on a 6800xt after being out of stock here in the uk pretty much all the time. After using a gtx 1080 plug and play in bootcamp I had high hopes when I went to plug in my amd gpu.

 

oh boy how wrong I was.

 

I’ve spent hours and hours looking through forums, doing every possible fix under the sun and nothing has even remotely worked. I did the standard DDU, with safe mode and the custom bootcamp driver, I’ve tried the normal drivers, I’ve reinstalled and downgraded windows several times. At this point I’m regretting buying this gpu and I may as well have waited for it to drop in price when it (potentially?!) works in the future.

I mean I’ve tried just about everything but do you guys know any specific info that would help my exact setup?

laptop: MacBook Pro 13 (2020, 4tb3)

egpu: razer core x

gpu: sapphire 6800xt nitro

bootcamp/windows version: 1903

 

LAPTOP: MacBook Pro 13 2020 (4 thunderbolt)/ EGPU: RX 6800XT/ ENCLOUSURE: Razer Core X

 
2020 13" MacBook Pro [10th,4C,G] + RX 6800 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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Kryme 2020
(@kryme_2020)
Active Member
Joined: 4 months ago
 

Hello, please try the latest Windows 10 20H2 fresh install as per my build in signature (tested Win 10 Pro, Win 10 Ent). Big Sur latest Bootcamp. Cheers.

2018 Mac Mini [8th,6C,B] + RX 5600 XT @ 32Gbps-TB3 (Razer Core X) + Win10 20H2 [build link]  

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Kieran Barker
(@kieran_barker)
Active Member
Joined: 4 months ago
 

@kryme_2020, Hi, thanks for the reply. As far as I'm aware the 5000 series isn't 't too troublesome in bootcamp. The 6000 series just launched and there's not enough people to have proper builds that I can follow atm. Ive also tried fresh windows install with all the necessary precautions, restarted my Mac more time than I care to admit. Until these cards become fully in stock and there are plenty of builds on here, I don't think I stand much of a chance especially since I don't know any coding or stuff like that.

 

 

LAPTOP: MacBook Pro 13 2020 (4 thunderbolt)/ EGPU: RX 6800XT/ ENCLOUSURE: Razer Core X

 
2020 13" MacBook Pro [10th,4C,G] + RX 6800 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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Manu89ft
(@manu89ft)
Eminent Member
Joined: 4 months ago
 

Hello! The only way I found to get my signature configuration going was to follow this guide https://egpu.io/forums/bootcamp/macbook-pro-16-windows-egpu-error-12-fix/ Smile

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 6900 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  

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Kieran Barker
(@kieran_barker)
Active Member
Joined: 4 months ago
 

@manu89ft, Hi, thanks for the reply. I tried the solution above and at first it appeared like it was going to work, the yellow warning went away from device manager and the software said it installed correctly. However when I went to restart windows the issue came back again and I haven’t been able to get it to work since. I did a DDU to try and reset things but that didn’t work :/

 

is my edition of windows a problem? (Home edition, latest update)

 

LAPTOP: MacBook Pro 13 2020 (4 thunderbolt)/ EGPU: RX 6800XT/ ENCLOUSURE: Razer Core X

 
2020 13" MacBook Pro [10th,4C,G] + RX 6800 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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Manu89ft
(@manu89ft)
Eminent Member
Joined: 4 months ago
 

I use windows 10 pro and I'm on the fast ring channel (dev, windows insider)

 

After each reboot follow the guide procedure: "Boot to Windows with eGPU"?

2019 16" MacBook Pro (RP5500M) [9th,8C,H] + RX 6900 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  

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Eightarmedpet
(@eightarmedpet)
Famed Member Moderator
Joined: 4 years ago
 

"I’ve spent hours and hours looking through forums, doing every possible fix under the sun and nothing has even remotely worked."

EFI bootlader?

eEFInd?

Apple set os?

What were the results of each?

2017 13" MacBook Pro Touch Bar
GTX1060 + AKiTiO Thunder3 + Win10
GTX1070 + Sonnet Breakaway Box + Win10
GTX1070 + Razer Core V1 + Win10
Vega 56 + Razer Core V1 + macOS + Win10
Vega 56 + Mantiz Venus + macOS + W10

---

LG 5K Ultrafine flickering issue fix

 
2018 Mac Mini [8th,6C,B] + RX 580 @ 32Gbps-TB3 (AKiTiO Node Lite) + Win10 20H2 [build link]  


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itsage
(@itsage)
Founder Admin
Joined: 4 years ago
 

Due to the integrated Thunderbolt controllers, setting up a Radeon eGPU in Boot Camp on the 2020 13-in MacBook Pro requires several extra steps. Take a look at andygev35's build guide for the detailed setup procedure.

LinkedIn | Twitter | Facebook | Youtube | Instagram
 
external graphics card builds
best laptops for external GPU
eGPU enclosure buyer's guide

 
2020 13" MacBook Pro [10th,4C,G] + RX 6700 XT @ 32Gbps-TB3 (CM MasterCase EG200) + Win10 1903 [build link]  


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Kieran Barker
(@kieran_barker)
Active Member
Joined: 4 months ago
 

@itsage, ok great news, my external display has switched on! I’m yet to test the performance, but I’ll get back with some numbers as soon as I can.

Thanks a lot!

 

LAPTOP: MacBook Pro 13 2020 (4 thunderbolt)/ EGPU: RX 6800XT/ ENCLOUSURE: Razer Core X

 
2020 13" MacBook Pro [10th,4C,G] + RX 6800 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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Kieran Barker
(@kieran_barker)
Active Member
Joined: 4 months ago
 

Okay i've done some initial testing and so far the results are great!

 

Forza horizon at 4k (ulrta preset) was easily getting 80 fps on average, going up to the mid 90s regularly. Looking at desktop configs online with vastly superior CPUs to mine, they were only getting around 100-110 fps on average. I also ran user benchmark (sorry dont have 3d mark) and since i had some results from my old desktop gtx 1080, i was very interested to compare the performance of the two GPUs.

 

The link to both my 6800xt and desktop gtx 1080 (not even egpu!) are below (Don't pay attention to the fact that all the scores are 0%, some glitch with the website.)  Scroll down to see the gpu performance.

 

Gtx 1080: MSI Z370 PC PRO (MS-7B49) Performance Results - UserBenchmark

 

Rx 6800 XT: Apple MacBookPro16,2 Performance Results - UserBenchmark

 

I don't really think there's much point of me doing a build because I literally followed @andygev35 build step by step and that worked a treat for my setup! If anyone really wants a build though i may consider it, but I wont go in to that much detail because I don't really know what I'm talking about! 😀 

 

Thanks for everyone here that helped me diagnose problems and recommended solutions! Special thanks to @itsage for pointing me in the right direction and of course @andygev35 build guide which did the trick!

LAPTOP: MacBook Pro 13 2020 (4 thunderbolt)/ EGPU: RX 6800XT/ ENCLOUSURE: Razer Core X

 
2020 13" MacBook Pro [10th,4C,G] + RX 6800 XT @ 32Gbps-TB3 (Razer Core X) + Win10 [build link]  


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