MP 1,1-5,1 MP 5.1 RX6600 slow performing on macOS

[Crazzak]

Hello, dear MacRumors Community,
I was reading through the MacRumors since many Years. Now I have a little Issue with my Mac and became a Part of the Community too.
My Problem is, that many Days ago my old GPU, a Radeon RX580 was dying. I bought a new RX6600, which I could actually buy very cheap. After I receive my new Radeon I patched the BIOS and put it in my MacPro 5.1. Everything is working fine from the first start.

I notice in Windows 11 a huge Performance Boost compared to my old RX580. After that, I was booting in my macOS (Monterey 12.6.5) and there i notice in some Games that the Performance isn't good, actually the Geek bench Scores proves that. I have now the same OpenCL Score like my old RX580 on macOS and on Windows about 40,000 Points more! My Metal Score is about 7,000 Points above that it should be. I don't know why this happened. I really hope anyone can help me.

To my Specs: I got an MP 5.1 with a Dual Xeon 5690, 48 GB RAM, RX6600 and at least the most important Information, I got running Monterey with Martin Lo’s OpenCore Package. I already tried to switch the Versions too. Was I trying, was to use a SATA to 8PIN PCI-E Adapter but still no change, still got a low GPU Performance on macOS.

Thanks in advance, Greetings

Crazzak

 

[startergo]

OpenCL is not properly developed on macOS for some time now. Compare only the Metal performance and disregard OpenCL.

 

[Crazzak]

Hey, thanks for your answer.

I know. But compared to the other benchmarks, I'm lower even in the OpenCL. The other RX6600 had about 6600 Points there. I think that's why my Performance in Games on macOS not gained, and it's not the bottleneck of the CPU. Is the Problem maybe the Martin Lo’s package? I saw there is already a Driver included, maybe the Driver is not compatible with the RX6600?

 

[h9826790]

Hello, dear MacRumors Community,
I was reading through the MacRumors since many Years. Now I have a little Issue with my Mac and became a Part of the Community too.
My Problem is, that many Days ago my old GPU, a Radeon RX580 was dying. I bought a new RX6600, which I could actually buy very cheap. After I receive my new Radeon I patched the BIOS and put it in my MacPro 5.1. Everything is working fine from the first start.

I notice in Windows 11 a huge Performance Boost compared to my old RX580. After that, I was booting in my macOS (Monterey 12.6.5) and there i notice in some Games that the Performance isn't good, actually the Geek bench Scores proves that. I have now the same OpenCL Score like my old RX580 on macOS and on Windows about 40,000 Points more! My Metal Score is about 7,000 Points above that it should be. I don't know why this happened. I really hope anyone can help me.

To my Specs: I got an MP 5.1 with a Dual Xeon 5690, 48 GB RAM, RX6600 and at least the most important Information, I got running Monterey with Martin Lo’s OpenCore Package. I already tried to switch the Versions too. Was I trying, was to use a SATA to 8PIN PCI-E Adapter but still no change, still got a low GPU Performance on macOS.

Thanks in advance, Greetings

Crazzak

Try this for RX6600 [N.B. Double check your PCIe path before you apply the code]

<key>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)</key>
            <dict>
                <key>@0,name</key>
                <string>ATY,Henbury</string>
                <key>@1,name</key>
                <string>ATY,Henbury</string>
                <key>@2,name</key>
                <string>ATY,Henbury</string>
                <key>@3,name</key>
                <string>ATY,Henbury</string>
                <key>device_type</key>
                <string>ATY,HenburyParent</string>
            </dict>

For more details, please read this thread

https://forums.macrumors.com/threads/tired-of-low-geekbench-scores-use-radeonboost.2231366/page-19?post=31763127#post-31763127

 

[Bootso]

Hello, dear MacRumors Community,
I was reading through the MacRumors since many Years. Now I have a little Issue with my Mac and became a Part of the Community too.
My Problem is, that many Days ago my old GPU, a Radeon RX580 was dying. I bought a new RX6600, which I could actually buy very cheap. After I receive my new Radeon I patched the BIOS and put it in my MacPro 5.1. Everything is working fine from the first start.

I notice in Windows 11 a huge Performance Boost compared to my old RX580. After that, I was booting in my macOS (Monterey 12.6.5) and there i notice in some Games that the Performance isn't good, actually the Geek bench Scores proves that. I have now the same OpenCL Score like my old RX580 on macOS and on Windows about 40,000 Points more! My Metal Score is about 7,000 Points above that it should be. I don't know why this happened. I really hope anyone can help me.

To my Specs: I got an MP 5.1 with a Dual Xeon 5690, 48 GB RAM, RX6600 and at least the most important Information, I got running Monterey with Martin Lo’s OpenCore Package. I already tried to switch the Versions too. Was I trying, was to use a SATA to 8PIN PCI-E Adapter but still no change, still got a low GPU Performance on macOS.

Thanks in advance, Greetings

Crazzak

Install the latest opencore + Monterey 12.7.1
then the solution will be in the video
My geekbench 4 score was 55000 points.
After I did what is in the video I got 133353 points!!!
Increase GPU performance
Hope this helps

 

[tsialex]

Install the latest opencore + Monterey 12.7.1
then the solution will be in the video
My geekbench 4 score was 55000 points.
After I did what is in the video I got 133353 points!!!
Increase GPU performance
Hope this helps

This proposed "solution" is completely flawed and only matters for benchmarking bragging and views on YouTube.

Without spoofing a 2019 Mac Pro or iMac Pro, anything that requires a newer Mac to work like direct hardware access to the GPU for hardware assistance of video encoding/transcoding/compression/decompression/coloring and Continuity/AirDrop/Universal Control/SideCar/etc will stop working.