2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS...
 
Notifications
Clear all

2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [Gibby]  

 of  3
  RSS

Gibby
(@gibby)
Active Member
Joined: 6 months ago
 

System Specs
1. Late 2018 Mac mini - i7-8700B/UHD Graphics 630 iGPU/32GM RAM/1TB SSD
2. LG 27" 4K Monitor x2, Samsung 27" 1080P Monitor x1


OS

macOS Catalina 10.15.2 + (Bootcamp) Win10 Pro Version 1909, build 18363.535


eGPU Hardware

Razer Core X Chroma+ AMD RX 5700 XT 50th Anniversary


Installation

1. Connect single monitor using iGPU HDMI port
2. Use Bootcamp to install Windows 10, Version 1909, build 18363.418
3. Apply all available updates (currently to 18363.535)
4. Place pci.sys (renamed to pci-1903.sys) from Win10 Version 1903, build 18362.30 into c:/Windows/system32/drivers/ folder
5. Select Start, Settings, Update & Security, Recovery, Advanced Startup, Restart Now
6. Using command prompt (x:\Windows\system32>) enter the following commands pressing the enter key after each line to perform the rename of pci.sys:
c:
cd windows\system32\drivers
ren pci.sys pci-1909.sys
ren pci-1903.sys pci.sys
exit
7. Select the 'Turn off your PC' button.
8. Disconnect iGPU HDMI cable, connect eGPU to Thunderbolt closest to iGPU HDMI connection
9. Power on
10. Disable Windows Updates

 

Benchmarks

Tool Windows / MacOS
Geekbench 4 186740 / 183297
Geekbench 5 62055 / 63008
LuxMark - Luxball 27646 / 27075
LuxMark - Mic 17771 / 20858
LuxMark - Hotel 2720 / 5102

Comments
Huge thanks to the post here ( https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/) and @itsage for instructions.

I am able to boot into Windows / MacOS without any issues. Without the pci.sys from 1903 I get the dreaded error 12 in Windows 1909 and no amount of troubleshooting fixed the issue.

This topic was modified 6 months ago

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [build link]  


itsage liked
ReplyQuote
whoDean
(@whodean)
Active Member
Joined: 10 months ago
 
  1. You’ve given me confidence to try this with mysimilar setup, thank you

Late 2018 Mac mini 6-Core i7-8700B
UHD Graphics 630 iGPU
64GB RAM/1TB SSD

Razer Core X Chroma

MSI Gaming Radeon RX 5700 XT

LG 34GK950F-B 34" 21:9 Ultragear WQHD Nano IPS Curved Gaming Monitor with Radeon FreeSync 2 (2018), Black


ReplyQuote
 @Os
(@os)
Active Member
Joined: 6 months ago
 

Did this work for anyone else? I am about to try it but I will first have to clean install Windows 10.

Could you say how did you use CMD to rename the file? Also, did you have to change ownership during that process, because for the life of me I don't get this file ownership thing (This is my first time using Windows at home in the last 10 years). Also where did you get the file from? 

I have similar setup: Mac mini 2018 + Razer Core x + AMD RX 5700 

This post was modified 6 months ago

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


ReplyQuote
(@koncept_zero)
Eminent Member
Joined: 8 months ago
 

@gibby

I have the same question as @Os. How did you perform step 4? Can you provide a bit more info? I tried searching for the pci.sys file in W10 but I can't find it. Are you using   Goalque ‘s  automate-eGPU EFI ? Did you DDU after installing all updates? Did you use bootcampdrivers.com?

This post was modified 6 months ago
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X) + macOS 10.15.5 [build link]  

ReplyQuote
Gibby
(@gibby)
Active Member
Joined: 6 months ago
 

@koncept_zero

I will try to provide additional detail as this was a confusing process going into it for me as well.

  1. Take the pci.sys from Win10 1903 and rename it to an alternate name (I chose pci-1903.sys).
  2. Browse on your computer to the following directory: c:/Windows/system32/drivers/
  3. Paste the pci-1903.sys into this folder.
  4. At this time you will have the unmodified pci.sys from Win10 1909 and in addition the pci-1903.sys files in the c:/Windows/system32/drivers/ directory.

Continue the steps as listed above - I didn't follow any additional guides or steps to take ownership of any files. I hope this helps. If I need to provide more detail please let me know where there is still confusion. I don't have enough posts to embed a picture, but you can find a picture of my 'final state' here: https://imgur.com/a/T6kMlRc

 

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [build link]  


ReplyQuote
Gibby
(@gibby)
Active Member
Joined: 6 months ago
 

@os

I was able to use command prompt to rename the file as in step 5 above I had selected to reboot into a recovery state for Windows 10. This negates the need for a special boot disk / USB to boot into recovery mode while still allowing you to perform the necessary changes to the local file system without the need to take ownership of the file. I got the file from downloading the ISO from this link: https://tb.rg-adguard.net/public.php using the options in this image: https://imgur.com/a/IyrTMY4 . The following steps are taken from this link: https://egpu.io/forums/pc-setup/egpu-fail-after-update-to-windows-19-03/ and noted by @bas_timer.

  • Open install.wim with 7-Zip
  • Mount the Image and then extract the following file
  • X:\sources\install.wim\1\Windows\System32\drivers\pci.sys

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [build link]  


ReplyQuote
Gibby
(@gibby)
Active Member
Joined: 6 months ago
 

I would also like to add that a Bootcamp update was just released (6.1.10) and it has provided approximately an additional 3-5% performance boost to the benchmarks linked above.

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [build link]  


ReplyQuote
tsakal
(@tsakal)
Reputable Member
Joined: 2 years ago
 

Thank you excellent guide. 

Do you know whether this will work with a 2018 mbp 13?

A. 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Razer Core X, Nitro+ RX5700 xt 8Gb, LG 32UK550
Mac OS Catalina 10.15.2, Ext SSD Windows 10 1903 V1 .295

B. 2.7 GHz I7 4 Cores, 16Gb, 1TB MBP 13 2018 TB3 , EGPU Gigabyte Gaming Box RX580 8Gb, Mac OS Catalina 10.15.2, Ext SSD Windows 10 1803

C. 3.1 GHz I7, 16Gb, 1TB MBP 13 2015 TB2 , EGPU Gigabyte Gaming Box RX580 8Gb


ReplyQuote
Gibby
(@gibby)
Active Member
Joined: 6 months ago
 

@tsakal

Although I do not have access to a MB Pro to validate, yes, I would expect similar results. 

2018 Mac Mini Core i7 8700B 32GB RAM 1TB SSD + Razer Core X + AMD Radeon RX 5700 XT 50th Anniversary

 
2018 Mac Mini [8th,6C,B] + RX 5700 XT @ 32Gbps-TB3 (Razer Core X Chroma) + macOS 10.15.2 & Win10 1909 [build link]  


ReplyQuote
 @Os
(@os)
Active Member
Joined: 6 months ago
 

@gibby

Thanks for the explanation and info about Bootcamp update. I took a little break from trying while replacing my new GPU card to the XT. I just realized it was only a marginal difference. Once my card comes, I will start running some more trials on the pci.sys method. Let me know if something else worked for you 

Mac mini + Razer Core x + PowerColor RX 5700XT + Catalina 10.15.2


ReplyQuote
 of  3