Z490 & Z590 - Will Z590 ever have macOS Support ?

[Middleman]

I have a question for you guys. Just wondered if anyone who has a Z490 and i9-11900K combo if they've ever managed to boot Catalina 10.15.7 and using what settings ie. CPU/GPU ids? As I seem to have encountered an issue.

 

[Feartech]

I have a question for you guys. Just wondered if anyone who has a Z490 and i9-11900K combo if they've ever managed to boot Catalina 10.15.7 and using what settings ie. CPU/GPU ids? As I seem to have encountered an issue.

as the gpu is not supported, you will need to use an amd card for best results


also the cpu is also not supported, maybe faking it may work

 

[ori69]

I have a question for you guys. Just wondered if anyone who has a Z490 and i9-11900K combo if they've ever managed to boot Catalina 10.15.7 and using what settings ie. CPU/GPU ids? As I seem to have encountered an issue.

Try this

Ibrahim Norlisk / OChack · GitLab

OpenCore EFI conf for High Sierra, Z490 motherboard Vision G and intel 10th (10400)

gitlab.com

 

[Middleman]

as the gpu is not supported, you will need to use an amd card for best results


also the cpu is also not supported, maybe faking it may work

The funniest thing is...I had been 'faking' it up to 10.15.6 with the Z490 & i9-11900K. I was using Coffee Lake IDs for both the CPU (EB060900) and GPU (0000923E) and they were both working fine up until that point. Which begs me to think what could be the issue that's causing it (it currently won't boot)?

 

[Middleman]

Try this

Ibrahim Norlisk / OChack · GitLab

OpenCore EFI conf for High Sierra, Z490 motherboard Vision G and intel 10th (10400)

gitlab.com

If you're not already aware, my first Z490 build was based off of his EFI (which I have referred to in the link below). I've since expanded it to most of the current OSes.
> https://www.tonymacx86.com/threads/...-xtreme-core-i5-10400-nvidia-gtx-1060.310287/

 

[ori69]

If you're not already aware, my first Z490 build was based off of his EFI (which I have referred to in the link below). I've since expanded it to most of the current OSes.
> https://www.tonymacx86.com/threads/...-xtreme-core-i5-10400-nvidia-gtx-1060.310287/

I also relied on this EFI, but since I have a 11900KF processor, I had to give iMac Pro identification.
Only thing i noticed is i9 detects me as i5 8 core. Changing to i9 9900 emulation did not change anything.


emulate cpuidData
ED060900 00000000 00000000 00000000
FFFFFFFF 00000000 00000000 00000000

 

[Middleman]

I also relied on this EFI, but since I have a 11900KF processor, I had to give iMac Pro identification.
Only thing i noticed is i9 detects me as i5 8 core. Changing to i9 9900 emulation did not change anything.


emulate cpuidData
ED060900 00000000 00000000 00000000
FFFFFFFF 00000000 00000000 00000000

Right. Technically speaking it should be correct. That's because the i9 11900K has been reduced to 8 cores from the 10 of the i9 9900, therefore what it detects is essentially correct.

In an ideal world if macOS supported Rocket Lake, normally we wouldn't need to do anything and leave the CPUID fields empty. But since it isn't we have to put a spoof in place. As the Rocket Lake architecture supports Comet Lake, ideally we should adopt Comet Lake IDs (the last gen) as the closest CPU & GPU spoof. This is because using a much more advanced version of the CPUID should unlock more of the chip's functionality for the system to use.

From what I understand so far (and from my testing of the i9-11900K on my Z490 system), Catalina 10.15.6 supports spoofed Coffee Lake, 10.15.7 supports only proper Comet Lake (ie. real chip), but Big Sur supports not just proper Comet Lake and Ice Lake but also spoofed Coffee Lake, Comet Lake & Ice Lake. Tiger Lake I know works with Big Sur but in very limited capacity at present (like with RKL, we still can't get the full VRAM or acceleration, only VESA mode). It would be interesting to see what is the cause of this.

 

[Middleman]

I have a question for you guys. Just wondered if anyone who has a Z490 and i9-11900K combo if they've ever managed to boot Catalina 10.15.7 and using what settings ie. CPU/GPU ids? As I seem to have encountered an issue.

So after having a discussion on an unrelated query about the Tiger Lake platform, I've come to the conclusion that I now know what the issue was I had encountered here. It was due to the fact that as I'd been booting from OC 0.6.5. on the Catalina build for my Z490 i9-11900K (spoofing CML cpu & gpu, which worked totally fine up until the upgrade to 10.15.7), I never stopped to think that the versions of OC I was using would have built-in CPU identifiers. The support for RKL chips didn't start until OC 0.6.8. and I was using OC 0.6.5. to boot the drive. That's what the problem was.

 

[ori69]

First off crippled insinuates that it had PCI-E and apple disabled it; that is not the case. EGPU can be used in a verity of Macs with TB3 all in ones like iMac and iMac Pro that have dedicated GPU already or beef up your 2018 Mac mini. I have also found that I can plug one into my Hack and use it for additional power without affecting my main GPU bandwidth. That being said dude is recommending to add a EGPU on a NUC a intel mini computer that does not have a PCI-E slot.

By crippled, I meant the lack of PCIe desktops where it could be used (eg Mac Pro 6.1).
The throughput of Thunderbolt is many times lower than the 'pure' PCIe x16 port.

 

[scottkendall]

By crippled, I meant the lack of PCIe desktops where it could be used (eg Mac Pro 6.1).
The throughput of Thunderbolt is many times lower than the 'pure' PCIe x16 port.

Wow thanks for the totally unneeded graph. I understand PCI-E x16 is far faster then TB3 if it wasn't TB3 PCI-E add-on card would not function in a x4 slot. And the Mac Pro 6,1 was not a system designed with the ability to added PCI-E devices so logically it was not crippled. Designed inferior to the Mac Pro 5,1 yes but not crippled.