Project - AMD Radeon Performance Enhanced SSDT

c3sco

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Jun 11, 2020
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I'm writing so many posts, I'm sorry.
I would like to inform you that the issues seems fixed.
Now I get 38000 OpenCL and 53000 metal just after boot, without the need to sleep/wake.
I was testing Sidecar and I just changed my SMBIOS to iMac19,1: that has solved the problem.
 

c3sco

New member
Jun 11, 2020
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All right, my last post about it since I fixed RX 580 performance:
I resetted my SMBIOS to MacPro7,1 since iMac19,1 was giving me some problems with AMDRyzenCPUPowerManagement (And sidecar still doesn't work).
When I booted with the old SMBIOS the sleep/wake bug was still here.
So I added this string to my boot-args (You need WhateverGreen):
Code:
shikigva=160 shiki-id=Mac-AA95B1DDAB278B95
shikigva to 128 so I have FairPlay 1.0 hardware acceleration and 32 to swap board id (128+32=160)
shiki-id to Mac-AA95B1DDAB278B95 that correspond to iMac19,1.
I rebooted 2-3 times to make sure that it works and I got just after boot a 40000 OpenCL and 53000 Metal (Little less than windows but I'm still happy).
Still need RadeonBoost to get 1000-2000 more points.
 

comset

New member
Oct 24, 2020
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Much easier with device properties, no rename/ACPI patching necessary.

On my 5500 XT
Before:
View attachment 514
After:
View attachment 515

Hi, Aluveitie
I am building with Gigabyte B550 and Asus RX5500XT 4G.
It works without any problem with reference to various people.
However, the RX5500XT has a Metal score of 27000.
I want to add Plistdevice properties.
Could you share the Config.Plist or Plistdevice properties part?
 

Aluveitie

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May 2, 2020
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Switzerland
@comset Here are my device properties I've used. They improve Geekbench scores, but don't really improve performance otherwise.
 

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Aluveitie

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May 2, 2020
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They were not really relevant before as they mainly improved Geekbench scores but had only minor effects in gaming.
Just to avoid confusion, the new Fix PAT patch has nothing to do with Big Sur.