SMBios 19.x - iMacs 2019

[msbc42]

what you did because nvram native did not work

BIOS 1801 and native NVRAM working without EmuVariableUefi-64.efi and .rc scripts.

 

[corint1]

BIOS 1801 and native NVRAM working without EmuVariableUefi-64.efi and .rc scripts.

ask for hero XI ... on hero X work from beginning

 

[henrikolsen]

I would be very grateful if you could help me achieve the same low power consumption and temperature on my RX 580 Nitro+. I'm running 10.14.5 with smbios 19,1.
...
I'll keep an eye on the temperature now. Currently 43 but is hasn't settled yet I think.

Trying Orinico now, and can see it's loaded in ioreg. Also dGPU reports as 'AMD RADEON RX 580' instead of 'RADEON RX 580' in About / System Report. Also videoproc lists this dGPU instead of HD 630, when using Orinoco.

Temperature on dGPU still settle around 50 degrees celcius during normal browsing / light use (browser open), as before. Cannot get it lower. Would like to.

 

[newcosmo20]

Does working native NVRAM mean that it doesn't hang on reboot at all?Mine boots fine without EmuVariableUefi + rc, but reboot or shutdown hangs. Is there any tip on this symptom?

 

[Xavi16]

DarwinDump iMac19.1

Mac Model: iMac19,1
CPU: Intel(R) Core(TM) i5-8500 CPU @ 3.00GHz
Memory: 8 GB 2667 MHz DDR4
Video: Radeon Pro 570X

 

[Xavi16]

Could you share the ACPI and IOReg dump a real iMac 19,1 please? I would like to optimise the DSDT of my hack and I hardly need this dump for this! Thank you

@MacintoshHealer Check this

 

[GeraldB]

I switched to iMac 19,1 today and I noticed that the idle CPU clock has gone up to 1,29GHz (13x) instead of 800MHz (8x) . So the whole thing feels a lot snappier too. But is that what Apple wants? Is the real iMac 19,1 also clocked like that? What are your experiences?

 

[pastrychef]

I switched to iMac 19,1 today and I noticed that the idle CPU clock has gone up to 1,29GHz (13x) instead of 800MHz (8x) . So the whole thing feels a lot snappier too. But is that what Apple wants? Is the real iMac 19,1 also clocked like that? What are your experiences?

I saw the same jump in idle MHz but, oddly, I didn't notice any change in power consumption...

I don't know if real iMac19,x idles at that speed.

 

[GeraldB]

I have checked the Intel specs and the CPU should idle with 800Mhz by design. So there is definitely something wrong with SMBIOS 19,1 or 19,2 and the i7 8700k with the clover plugin-type for PWM. But anyway I have switched to iMac Pro 1,1 and that even let me disable my IGPU and I also don't use WEG anymore. PWM is perfect and also no black screen issues with my Radeon 570. Also HEVC is working. Thank you Apple for finally fully support our Radeon cards. The only issue left is the purple lines on startup. But my Mac always sleeps when I walk away so I will see this only once in a while or with the next upgrade.

 

[telepati]

Guys, some values of the SMBIOS changed such as Firmware Features, EFI versions, etc. Update your Clover Configurator and SMBIOS.