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How to extend the iMac Pro to X99 [Successful Build/Extended Guide]

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@kgp, in trying again and again, to get the best performance out of the 5820K, I realised that I had missed step 5.1.2 in your guide. So I tried it just now, on the extracted BIOS update file for my motherboard (Gigabyte X99 UD4). When I run the actual UEFIPatch command in temrinal on my BIOS file, I get the following message

parseFile: non-empty pad-file contents will be destroyed after volume modifications
No patches can be applied to input file


Is there a way to cirumvent this errror and get the patches applied to my BIOS file?

Are you sure that you are properly applying the patch as described in my guide?
 
Are you sure that you are properly applying the patch as described in my guide?

I followed the patching guide fully from B1.1 till step i. The steps outlined in B1.2 appear to be steps to unlock the 0xE2 MSR on ASUS motherboards. Mine is a Gigabyte X99 UD4, in which the contents of the AppleIntelInfo.kext output show that that particular MSR (0xE2) as unlocked. When I went through the steps from B1.2 onwards, I got the error when runnig the UEFIPatch command in terminal.

However, I was able to successfully update the motherboard BIOS with the file that I had created in step B1.1 (along with the Hex Edit edit to change the 01 to 00, since mine is a Gigabyte BIOS file and needs that change) and I believe that the CPU microcode was updated.

Also, in step B1.f, I could see that the cpu microcode for the 5820K was already present, but had gone through the process to ensure anything else that was missing, was updated as well.

However, still stuck with the processor at 1.2 GHz.
 
I followed the patching guide fully from B1.1 till step i. The steps outlined in B1.2 appear to be steps to unlock the 0xE2 MSR on ASUS motherboards. Mine is a Gigabyte X99 UD4, in which the contents of the AppleIntelInfo.kext output show that that particular MSR (0xE2) as unlocked. When I went through the steps from B1.2 onwards, I got the error when runnig the UEFIPatch command in terminal.

However, I was able to successfully update the motherboard BIOS with the file that I had created in step B1.1 (along with the Hex Edit edit to change the 01 to 00, since mine is a Gigabyte BIOS file and needs that change) and I believe that the CPU microcode was updated.

Also, in step B1.f, I could see that the cpu microcode for the 5820K was already present, but had gone through the process to ensure anything else that was missing, was updated as well.

However, still stuck with the processor at 1.2 GHz.

B1.2 is crucial.
 
How do I make it work for my Gigabyte board? The file extensions is not "xxx.CAP" but the version "xxx.24c"

Has anyone else with a Giagbyte board managed to patch it with the UEFIPatch command?

Did not see that you have a GB mobo. No need to apply B1.2 in this case. All GB mobos have MSR unlocked.
 
Another funny quirk I have noticed is that the processor frequency does go up and down, right after having logged into Mac OS. It stays moving till a minute or so, after which it comes down to 1.2 GHz and then stays there, no matter what you throw at it. If I allow the system to go into sleep ad wake from that, the processor frequencies start to move around, but never beyond 3.3 GHz, which is the top frequency (not the turbo frequency) of my processor, and never making straight horizontal lines. I find this very strange.
 
As for my CPU (OC to 4.1 GHz), its frequency at idle jumps from 1.5 to 4 GHz.
What could be the problem?
 
As for my CPU (OC to 4.1 GHz), its frequency at idle jumps from 1.5 to 4 GHz.
What could be the problem?

Why there should be a problem?
 
Do you think such frequency jumps without load is normal?

Look at CPU power consumption, CPU temps and CPU utilisation and don’t get misled by IPG frequencies, which can be a mixture of many things! Try to reproduce my IPG screenshots with CPU idle and max load (Cinebench) conditions. Learn to properly interprete IPG results.
 
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