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AMD Radeon Performance Enhanced SSDT

Thanks for the very interesting work... I just tried out the SSDT for RX580, and got the following results (before and after sleep)...

Before SSDT:

OpenCL:
beforeOpenCL.jpg



Metal:

BeforeMetal.jpg



After SSDT:

OpenCL:

AfterOpenCL.jpg


Metal:

AfterMetal.jpg


So overall, a very mediocre increase in performance... but GPU die temp has come down anywhere from 5c to 10c, which is a real achievement!

Hope someone finds this info useful. PS. Using iMacPro1,1 SMBIOS without agdpmod=pikera, Sapphire Pulse RX 580 8GB
 
Anyone else's RX5700 XT does a load buzzing noise when moving the mouse/scrolling on pages? Like a very load coil whine?
I saw a lot of reports of this using Windows, but after drivers updates from like 6 months ago there are not a lot of reports.
This happens to me but only on my MacOS boot (I guess because of outdated drivers?). When I restart and boot into Windows it doesn't happen on windows. Only on MacOS.

Any fix for this?
I have this with Sapphire Nitro+ RX5500XT. It's annoying as hell in a quiet room and I hear it in both Windows 10 and macOS Catalina.
 
Thank you for your wonderful guide.
It worked with "HP8300CMT RX570 Opencore 0.6.3 Catalina 10.15.7" with "PEGP to PGP0" setting.
ACPI_Patch.png
 
this not worked for me. Is it possible that my ssdt path is not correct?
thanks in advance
 

Attachments

  • SSDT-RX580- X99A-II.aml
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I may have done something wrong, but I cannot get the Orinoco framebuffer for my RX580. Using OC 0.6.3 on Big Sur, I install the RX580 SSDT and AGPM.kext, adding them to the config.plist but it still shows RadeonFrameBuffer.

Any help would be appreciated.

edit: FWIW, I have a MSI 8GB RX580 card with 2 x HDMI, 2 x DP, 1 x DVI

edit #2: I removed the SSDT and instead used the DeviceProperties detail from https://www.tonymacx86.com/threads/amd-radeon-performance-enhanced-ssdt.296555/post-2118592

This enabled the orinoco framebuffer. Success! Except, it doesn't solve the problem I hoped it would address.

System and Samsung 4K HDR TV boot fine. But if I turn off the TV and turn it on again, there is no signal. Have to reboot the hackintosh every time.

Anyone know what that is caused by?

I have updated my attached files.
 

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  • EFI 5.zip
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  • iMac Pro 2.ioreg
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Last edited:
Some before and after geekbench scores. Running an ASRock RX 5500 XT. Not too bad, especially on the OpenCL score!
 

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For me so less differences of GB points has zero speed effect and maybe also happen between runs with same config.
Real effect of that SSDT will show at least 5% m mostly 10% which would in your case of around 42000 at least 2100 points diff (5%) and not only 160 points (much less than 1% ) ;)
 
here is my geekbench 5 results. I use 14,2 SMBIOS.
 

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