[SUCCESS] Installed Monterey 12.6 with OC 8.4 on Asus LGA775 P5G41T-M LX V2 / Xeon L5420 and NVIDIA GT730

rezat4795 said:

Never say never!

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Well, I didn't say never. I was saying it has no support in Monterey. I could have said it's not worth bothering to make it work because it's not even better than an iGPU from Intel. If you don't have a core i CPU it's probably better than nothing as it put's a picture on your monitor. How many hours of work did it take ? What hacks did it ?

Run a few benchmarks like GB5 Metal and OpenCL.

Here's a comparison of UHD630 vs. an HD5450 dGPU from AMD.



Even the 4 year older HD4600 integrated graphics performs much better.

trs96 said:

Well, I didn't say never. I was saying it has no support in Monterey. I could have said it's not worth bothering to make it work because it's not even better than an iGPU from Intel. If you don't have a core i CPU it's probably better than nothing as it put's a picture on your monitor. How many hours of work did it take ? What hacks did it ?

Run a few benchmarks like GB5 Metal and OpenCL.

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Well, Intel Core 2 Quad is the best option I've got, since my mobo is ancient and supports LGA775 socket. So no Intel core i series and definitely no iGPU for me.
It took a few days, dozens of trials and breaking installations.
All I had to do, was to disable secure boot, disable SIP completely, write and compile my GPU's SSDT and inject it to the system (I took someone's SSDT and modified it to match mine.)
And finally, OCLP could recognize my GPU and allowed me to apply root volume patches for my GPU (TeraScale 2 series patches).
And then, when I rebooted the system, hardware acceleration on my gpu were activated.

rezat4795 said:

When I rebooted the system, hardware acceleration on my gpu were activated.

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Nice job on getting your older hardware to work with Monterey. I like to keep older systems going longer too.

Updated successfully without problem to Monterey 12.6
Need to apply the Nvidia Kapler Patch with Open Legacy Patcher 4.11

rezat4795 said:

Well, Intel Core 2 Quad is the best option I've got, since my mobo is ancient and supports LGA775 socket. So no Intel core i series and definitely no iGPU for me.
It took a few days, dozens of trials and breaking installations.
All I had to do, was to disable secure boot, disable SIP completely, write and compile my GPU's SSDT and inject it to the system (I took someone's SSDT and modified it to match mine.)
And finally, OCLP could recognize my GPU and allowed me to apply root volume patches for my GPU (TeraScale 2 series patches).
And then, when I rebooted the system, hardware acceleration on my gpu were activated.

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Interesting. Can you share the ssdt and other files needed to activate this GPU?

Hi I have your same mobo
P5g41t m lx
But I stuck at inet_attach and usb crash
Can u share your last efi?

I see a couple of you have GA-X58A-UD3R builds as well. Anyone get Monterey installed? I've been trying, its been a struggle... This x58a has been my recording rig since 2011. It would be great if I could a couple years more. Running a PCI audio rig. Some software I have/run, no longer update on Mojave, Logic and some plugins.

Thank you community.

Mr. Meoff said:

its been a struggle... This x58a has been my recording rig since 2011. It would be great if I could a couple years more.

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Many people built hacks with this board back in 2010/11 and most of them still work. The problem is that the chipset is really too old to work well with Monterey or newer. I've not seen any success with Monterey. CPU power mgt. is rather tricky to get working. The oldest hardware that still works well with Monterey is Haswell, Z87 and Z97 chipset. The RX 580 can be used with one of these systems and works fine with Monterey.

Right now the best deal going for a low cost audio production system running Monterey is this Dell 7060 tower. For just 300 USD you get a six core twelve thread i7-8700. You can easily upgrade the ram to 64GB. Use the UHD 630 graphics (via dual DP) with two 4k monitors. Many of the Gigabyte or Asus Z470 motherboards you'd use for an audio build cost 300 dollars or more. That's just for the board. This Coffee lake based system will also work with Ventura and macOS 14 that comes out this year. So it's got a little future proofing.


Here's what the same machine, but without the NVMe and less ram, new not refurbished, costs on Amazon.