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Hmm if that's correct it's still not running the 1Ah code... Let me add debug strings to all the AMD cases to determine what's being run... Edit: Here we go, each AMD Family case now has a debug string so we know exactly where the 9900x is being routed and will help diagnose why.

It's not the correct build, The one uploaded should have todays date on it. You only need to replace OpenCore.efi and reset the NVRAM.

I see the issue now although it's now being read correctly as Family 1Ah. This is likely caused because now your FSB is not being read so it's trying to divide it by zero. Try this. I've added extra debug lines and a failsafe for the division by zero.

Ok now I see what I was expecting, Does it still not boot?

This seems to be an older build than what I uploaded. Make sure your replacing the OpenCore.efi file The uploaded version should force the correct ExtFamily signature and run the correct code.

Ok, so it wasn't the reason I thought. Try this instead please,

Please test this out. It's a debug build so ensure you've got the target set to 67 and upload the log file.

Willkommen. Glad to have you here :)

You've not listed any specs so we can't help. Please add your system specs to your signature here, https://forum.amd-osx.com/account/signature

Fair enough I suppose. My thinking is it's at the back out of sight :D

The cable is a nice touch shining through the front. Have you thought about an ATX conversion kit? https://thelaserhive.com/product/g5-atx-kit-psu-holder/

Looks dope :D What you could do for switching between then if that's what you want to do is, 1: SSD EFI boots iGPU config. 2: USB with modified EFI to disable iGPU and run WEG/RX 560 That way it's just a bios key away to switch.

Welcome Chris :D

A VM will not get good graphics regardless of the GPU unless you are using PCI Passthrough which VMWare doesn't support. Older versions of macOS allowed you to disable beam synchronization which improved the visual perfomance but Apple removed that option.

No I have a 5600X and it works fine. What I mean is I can't build OC just now for some reason. So I can't apply a test fix for you to try just now.

That's as expected... Not sure what's going on here then. Will need to dive into it at some point. Unfortuantly OpenCore won't compile on my machine...

I think the 9900X does need some adjustments in OC. From that log it's showing the Family as F, where it should be 26 (1Ah). A CPUID readout from Linux or Windows would confirm if the CPU itself is reporting the correct family etc

Is that motherboard UEFI? Regardless if it is or not you'd be best making an installer following Dortania's guide and using OpenCore.

Removed the El Capitan roll back kexts too. Possibly causing that panic. What's strange is you've got debug and keepsyms in your boot args but it's not showing the KP cause. Try this. Reset the NVRAM too.

As mentioned above the Nvidia cards aren't supported anymore. For an out of the box expierance you'd need a supported AMD GPU. Saying that however, you could patch your system using the OpenCore Legacy Patcher (OCLP) to enable Nvidia support. This has it's downsides though like requiring a...