[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

FlyinBurritoMan · Feb 14, 2021

Hello Casey and all,
First off, thank you for this guide and for your continued support on this forum. I was able to build a i9900K Hackintosh following your guide (under 10.15.3) back in late 2019. Runs great! Still on Clover (aint broke, why fix it!), on 10.15.7.
As much as I love my Hackintosh, the draw of using the latest GPUs for production (3D animation and VR creation) and gaming are pulling me to the windows side of my computer. I was able to pick up a Nvidia RTX 3090 FE for MSRP. With GPUs in high demand, I was thinking about selling my Sapphire rx 5700xt Nitro+ to offset the high price of the 3090.
With that in mind, does any one have success with installing an unsupported GPU in slot 1 for windows, yet use the Hackintosh in headless mode? I realize that I'd lose my GPU acceleration (how I wish Apple and Nvidia would make up and play nice!). I have access to a Vega 56 that I could use from my older Hack (i7 4790k machine) if needed, though I'd like to keep it in my older system.
I know there's info on disabling the GPU is slot 2, but what about slot 1? What changes do I have to make to my config.plist? Would I have to change my bios each time (video from gpu or integrated graphics) when switching to Windows/Mac?
Currently, I have my 5700xt in slot 1, will be replaced with the 3090. In slot 2 and 3, I have 1TB NVMe drives in PCIE adaptors (one for Mac, one for windows), and 2x 256MB NVMe drives in the motherboard NVMe slots (for system drives, one for Mac and Windows). I could replace/consolidate one of the 256 MB NVME drives to one of the 1TB drives if needed. I also have the Fenvi wifi/bluetooth in one of the PCI slots.
If anyone has insight or can direct me in the right direction, I'd greatly appreciate it.
Lastly, Happy Valentines day y'all!

Update: I think I figured out how to boot into my Hackintosh in headless mode/using the iGPU. I removed the GPU from the computer, made a copy of my config file, updated it to match the "config-internal-GPU.plist" from "Mini-Guide for Fresh Installation of Catalina 10.15.1 and Newer" files since those were the files I originally used (and am still on).
I was not able to use the HDMI port on the motherboard to display video on my Hackintosh (though it works in the BIOS), but using Thunderbolt to DP adaptors work fine in Hackintosh.
Now to install the 3090 and see what happens on the Hackintosh side. Will be looking into how to disable Slot 1 soon. Wish me luck!

Ploddles · Feb 15, 2021

FlyinBurritoMan said:
Now to install the 3090 and see what happens on the Hackintosh side. Will be looking into how to disable Slot 1 soon. Wish me luck!

In the 1st post of this thread there is an SSDT to disable slot 1.

zgonda · Feb 15, 2021

Hello Mister Casey !!
Do you have DGPU sensors (Radeon 5700 in particular) with iStatistica Pro ?

FlyinBurritoMan · Feb 15, 2021

Ploddles said:
In the 1st post of this thread there is an SSDT to disable slot 1.

Thank you! I read the 1st post and saw the section about disabling the GPU in Slot2, but no mention of Slot1. Turns out the file to do so is available amongst all the files found at the end of the post!
Will be testing my Hackintosh with the SSDT and 3090 installed shortly!

CaseySJ · Feb 15, 2021

FlyinBurritoMan said:
Hello Casey and all,
...
With that in mind, does any one have success with installing an unsupported GPU in slot 1 for windows, yet use the Hackintosh in headless mode? I realize that I'd lose my GPU acceleration (how I wish Apple and Nvidia would make up and play nice!). I have access to a Vega 56 that I could use from my older Hack (i7 4790k machine) if needed, though I'd like to keep it in my older system.
...

Update: I think I figured out how to boot into my Hackintosh in headless mode/using the iGPU. I removed the GPU from the computer, made a copy of my config file, updated it to match the "config-internal-GPU.plist" from "Mini-Guide for Fresh Installation of Catalina 10.15.1 and Newer" files since those were the files I originally used (and am still on).
I was not able to use the HDMI port on the motherboard to display video on my Hackintosh (though it works in the BIOS), but using Thunderbolt to DP adaptors work fine in Hackintosh.
Now to install the 3090 and see what happens on the Hackintosh side. Will be looking into how to disable Slot 1 soon. Wish me luck!

Hello @FlyinBurritoMan,

Unfortunately it's an all-or-nothing proposition with unsupported GPUs. As you pointed out, GPUs serve two purposes:

Driving a display monitor via HDMI, DisplayPort, and other connectors.
Providing immense "compute" power for specific classes of functions.

This is why the iGPU on Intel processors can be placed in either of two modes:

Headless mode: iGPU provides compute power to specific applications, but does not drive a display monitor.
Non-headless mode: iGPU provides both compute power and ability to drive a display monitor.

So the question you are asking is whether we can do the same with unsupported GPUs. Unfortunately the answer is no. With an unsupported GPU, the only options we have are these:

Disable the GPU entirely via an SSDT (this completely hides the GPU from macOS).
Use the GPU to drive a display monitor over HDMI, DisplayPort, etc. but without display acceleration. This means windows will move slowly, windows will scroll even more slowly, etc. Everything that appears on screen will appear and move very slowly.

CaseySJ · Feb 15, 2021

zgonda said:
Hello Mister Casey !!
Do you have DGPU sensors (Radeon 5700 in particular) with iStatistica Pro ?

Good question. Alas there are no GPU sensors (at this time). HWMonitorSMC2, however, does display GPU sensors.

swizzley · Feb 15, 2021

CaseySJ said:
CaseySJ's Coffee Lake in Phanteks Evolv X ATX Case:
Gigabyte Designare Z390 - i7-9700K - UHD 630 - AMD RX 580
(Please do not quote this build guide in its entirely. Post a link instead.)
(See this post for how to refer to a Guide or Mini-Guide.)
...

So first of all, thanks again for all your work and help. I’ve tried all 3 guides to get to Catalina, I’m not sure which version of Catalina I archived so I tried both version guides for fresh install, and the Mojave to Catalina Upgrade. The Upgrade never produced video so maybe I messed up. Both the Fresh installs just hang on Install macOS. The mouse works and I can connect to WFi and reboot but once I click Install nothing happens. I’ve waited 20 minutes and nothing. I’m using BIOS F9j and skipped the micro guide since I verified the setting was disabled in BIOS. Would really appreciate any help. Thanks again.

CaseySJ · Feb 15, 2021

swizzley said:
So first of all, thanks again for all your work and help. I’ve tried all 3 guides to get to Catalina, I’m not sure which version of Catalina I archived so I tried both version guides for fresh install, and the Mojave to Catalina Upgrade. The Upgrade never produced video so maybe I messed up. Both the Fresh installs just hang on Install macOS. The mouse works and I can connect to WFi and reboot but once I click Install nothing happens. I’ve waited 20 minutes and nothing. I’m using BIOS F9j and skipped the micro guide since I verified the setting was disabled in BIOS. Would really appreciate any help. Thanks again.

Hello @swizzley, please follow this OpenCore-based guide for fresh installation of Catalina: