MP 7,1 Nvidia’s RTX 3090/ 4090/ A6000/ 6000 Ada in a Mac Pro (2019)

[Mac3Duser]

Just noticed you also put another 3060. What's the use for both Nvidia GPU's (even 3 GPU's including the MPX in Windows Boot Camp)?

I saw you have W5700X and RX 6900 XT + nvidia 4090 so I wanted to know how you manage the AMD drivers in windows 11... I have a vega II and it's impossible to install last AMD drivers (it is stuck with 21)... other question : you have enough power for RX 6900 XT + 4090 ? with vega II installed, I have only 3 pcie connectors available...
thank you

 

[H2SO4]

I finally nabbed a 4090FE and put it in my 7,1 2019 Intel Max Pro. In the picture, I have a 3 pcie power plugs going to the 4090 and one going to a 3060. I removed some pcie slot covers so the hot air from the GPU can be pushed out. Works quite well in windows (obviously). I haven’t gone back to MacOS yet though. For that I usually just use my laptop. View attachment 2244105

Hi.
The RTX has a single 12 pin to dual 8 pin connector If I'm right.
Where is you get the 8 pin to mini 8 pin for the motherboard if you don't mind?

 

[DrEGPU]

Hi.
The RTX has a single 12 pin to dual 8 pin connector If I'm right.
Where is you get the 8 pin to mini 8 pin for the motherboard if you don't mind?

Belkin sells a Mac Pro kit. You can also find individual cables on aliexpress but sometimes you’re rolling the dice on that site

 

[H2SO4]

Belkin sells a Mac Pro kit. You can also find individual cables on aliexpress but sometimes you’re rolling the dice on that site

Thanks. I'll check it out.

 

[flowrider]

^^^^I don't often recommend OWC, but they have a kit for ½ the price of the Belkin kit.

OWC PCIe AUX Power Cables Kit for Mac Pro 2019 - Current

Tap into your Mac Pro's internal power for high-performance graphics, video, audio, and other power-demanding PCIe accessory cards.

eshop.macsales.com

Lou

 

[H2SO4]

^^^^I don't often recommend OWC, but they have a kit for ½ the price of the Belkin kit.

OWC PCIe AUX Power Cables Kit for Mac Pro 2019 - Current

Tap into your Mac Pro's internal power for high-performance graphics, video, audio, and other power-demanding PCIe accessory cards.

eshop.macsales.com

Lou

Got it already. I got a Belkin one from Amazon. Was half price strangely enough.

 

[Bafflefish]

I think the RTX 4090 FE adapter uses 3x PCIe 8-pin cables, fyi. That'd leave 1x 8-pin and 1x 6-pin in the Mac Pro.

 

[DrEGPU]

I think the RTX 4090 FE adapter uses 3x PCIe 8-pin cables, fyi. That'd leave 1x 8-pin and 1x 6-pin in the Mac Pro.

4090’s have adapters with 4x pcie 8-pin sockets. They can work with just three plugged in though

 

[Derived]

Beyond the scope of this thread I know but about to lose my mind and I figure at least a handful following this topic would be helpful...can anyone point me to a good resource for getting Ubuntu installed on a PCIe drive? Having a hell of a time over here and can't even seem to find one instance of someone walking thru this, only the odd mention that it's been done by others. Apologies for OT.

 

[DrEGPU]

Beyond the scope of this thread I know but about to lose my mind and I figure at least a handful following this topic would be helpful...can anyone point me to a good resource for getting Ubuntu installed on a PCIe drive? Having a hell of a time over here and can't even seem to find one instance of someone walking thru this, only the odd mention that it's been done by others. Apologies for OT.

Home - t2linux wiki

wiki.t2linux.org

 

[H2SO4]

Beyond the scope of this thread I know but about to lose my mind and I figure at least a handful following this topic would be helpful...can anyone point me to a good resource for getting Ubuntu installed on a PCIe drive? Having a hell of a time over here and can't even seem to find one instance of someone walking thru this, only the odd mention that it's been done by others. Apologies for OT.

Drop these guys a message, maybe they know?

ARC-1686-NOD | NVMe | 廣安科技 Areca

 

[Derived]

Found the t2linux page by luck about 15 minutes after posting my message, typical how it works with these things. Thanks everyone. Hoping to get the RTX 3090 up and running soon.

 

[lalami1990]

Hi all,

I have a 2019 Mac Pro with a RTX 4080 Super and a AMD W6600X. I too am experiencing issues with my RTX card while using macOS Sonoma such as random kernel panics, freezing etc. I see that there is a FakeNVidia Kext file that I can use to resolve the issue. Is this correct? If so, is there a link to an updated version that would work on a 4080 Super?

Thank you!

 

[J-MI]

Hi all,

I have a 2019 Mac Pro with a RTX 4080 Super and a AMD W6600X. I too am experiencing issues with my RTX card while using macOS Sonoma such as random kernel panics, freezing etc. I see that there is a FakeNVidia Kext file that I can use to resolve the issue. Is this correct? If so, is there a link to an updated version that would work on a 4080 Super?

Thank you!

Do you have an Windows OS on your MacPro to run the RTX 4080?

 

[avro707]

Do you have a Windows OS on your MacPro to run the RTX 4080?

You have to, it’s unsupported in macOS because Apple having a hissy fit tantrum doesn’t want to allow drivers for it.

You have to disable the nvidia cards so macOS cannot see them.

Its a shame no third party has found a way to get around this limitation.

 

[tsialex]

it’s unsupported in macOS because Apple having a hissy fit tantrum doesn’t want to allow drivers for it.

NVIDIA have lot's of blame too, Apple relationship with NVIDIA become sour some years before METAL/Mojave debacle, people frequently forget that NVIDIA is not an innocent party here, defective NVIDIA GPUs made Apple recall of years and years of Mac Book Pros production.

You have to disable the nvidia cards so macOS cannot see them.

Its a shame no third party has found a way to get around this limitation.

There is no financial return supporting macOS today, Apple is a now a major competitor in the GPU/AI business with Apple Silicon GPUs. While most of us in the prosummer market is not exactly happy with this situation, we are not the ones that Apple cater most.

 

[avro707]

While most of us in the prosummer market is not exactly happy with this situation, we are not the ones that Apple cater most.

I'm still certainly going to make noise about it though - as anyone who has spend large amounts of dollars on a machine which is still supported under Applecare has a right to do.

While the previous Nvidia GPUs might have had problems, the ones available now are top notch and they really perform. it's time to move on from past events and let the users benefit.

I'm glad I don't yet have to have a separate PC sitting on my desk since this Mac can do both duties pretty well.

I was considering going with a 4090RTX setup (which would have been really fast in Windows) but with the difficulties around keeping that GPU unrecognised by MacOS I ended up going for dual W6800X Duo setup - a AUD$14,000 outlay on brand new GPUs from Apple.

 

[tsialex]

I'm still certainly going to make noise about it though - as anyone who has spend large amounts of dollars on a machine has a right to do.

While the previous Nvidia GPUs might have had problems, the ones available now are top notch and really perform.

I'm glad I don't yet have to have a separate PC sitting on my desk since this Mac can do both duties pretty well.

I was considering going with a 4090RTX setup (which would have been really fast in Windows) but with the difficulties around keeping that GPU unrecognised by MacOS I ended up going for dual W6800X Duo setup - a AUD$14,000 outlay on brand new GPUs from Apple.

You are still not seeing the big picture, the development of NVIDIA drivers for macOS were made viable by the hundreds of millions of MacBook Pros and iMacs, not by the Mac Pro.

Mac Pro driver development was only justifiable economically since NVIDIA already had to do it anyway for the millions of low-level and mid-range chips that were being sold with the other two Macs.

Even if Apple forget everything, let be bygones and completely gave the keys to the kernel to NVIDIA today, NVIDIA wouldn't take it. Apple is now a major competitor that only have some dozens of thousands Macs that can run a NVIDIA GPU, this won't make it economically viable to develop and maintain drivers.

 

[LEOMODE]

I saw you have W5700X and RX 6900 XT + nvidia 4090 so I wanted to know how you manage the AMD drivers in windows 11... I have a vega II and it's impossible to install last AMD drivers (it is stuck with 21)... other question : you have enough power for RX 6900 XT + 4090 ? with vega II installed, I have only 3 pcie connectors available...
thank you

I use either W5700X or 6900XT along with 4090. I have installed a separate PSU to accommodate for 4090. Whenever I go to Windows I turn on the PSU switch to use 4090, and whenever I go back to Mac OS, I turn it off to avoid kernel panic whenever it goes to sleep. Now it's working flawlessly.

By the way, correct you won't have enough power for 4090 + 6900XT. I used to have 3090 and that was fine with 6900XT.

Hope this helps.

 

[LEOMODE]

Hi all,

I have a 2019 Mac Pro with a RTX 4080 Super and a AMD W6600X. I too am experiencing issues with my RTX card while using macOS Sonoma such as random kernel panics, freezing etc. I see that there is a FakeNVidia Kext file that I can use to resolve the issue. Is this correct? If so, is there a link to an updated version that would work on a 4080 Super?

Thank you!

Just install like what I did: Install a separate external PSU and connect 4080 to it. Whenever you use Mac OS, turn the switch off so it turns off 4080. When you use Windows, turn it on and disable AMD GPU. Simple and works like a charm.

 

[J-MI]

You have to, it’s unsupported in macOS because Apple having a hissy fit tantrum doesn’t want to allow drivers for it.

You have to disable the nvidia cards so macOS cannot see them.

Its a shame no third party has found a way to get around this limitation.

I know all that. I have an RX 6900 XT for Sonoma and an RTX 4080 for Windows 11 on my Mac Pro running OpenCore and everything works fine on my end. I'm just asking him because the way he states his problem doesn't inform the point I raised. It's not necessarily necessary to have an external PSU.

 

[H2SO4]

You have to, it’s unsupported in macOS because Apple having a hissy fit tantrum doesn’t want to allow drivers for it.

You have to disable the nvidia cards so macOS cannot see them.

Its a shame no third party has found a way to get around this limitation.

Can you elaborate a little more on this? I've done nothing and certainly seem to be Ok.

 

[argasek]

Post in thread 'Nvidia’s RTX 3090/ 4090/ A6000/ 6000 Ada in a Mac Pro (2019)'
https://forums.macrumors.com/thread...0-ada-in-a-mac-pro-2019.2252358/post-29417691

Read up to make sure your GPU pcie ID is in there

Thanks a lot folks! Worked like a charm with CSR disabled on MacOS Sequioa. The PCI IDs for my RTX 4080:

<key>IOPCIMatch</key>
<string>
0x17c210de&amp;0xffffffff
0x220410de&amp;0xffffffff
</string>

I hit one peculiarity though: I had to move the RTX to one slot above my MPX W6800X. Otherwise during boot I was getting the PCIe card error behavior (orange LED flashing two times).

If Mac Pro encounters an error with a PCIe card, the status indicator light flashes amber twice and repeats until the computer is turned off.

I tried swapping the source of PCIe power (1&2 + 3, 2 + 3&4 and other combos) but it didn't help. Moving up – did. I also used the MODDYI "ATX 3.0 PCIe 5.0 600W 12VHPWR 16 Pin 90 Degree Angled Extension Cable" (B variant) in order to be able to fit everything inside the case. No external ATX PSU needed, phew!

The fans on RTX spin with minimum speed, so no noise here, great. On Windows though I had to create a configuration where I boost the fans on both RTX and intake fans, as the system seemed unstable under load (BSODs).

I connected my TV to the HDMI output of the RTX (and I use it on Windows 11) and my two LG monitors to Thunderbolt outputs of the top PCIe card of the MP (on MacOS).

 

[H2SO4]

Can you elaborate a little more on this? I've done nothing and certainly seem to be Ok.

I mean on getting Nvidia GPUs to work on OSX.

 

[J-MI]

I mean on getting Nvidia GPUs to work on OSX.

Unfortunately, at least for newer GPUs, this is not possible under OSX.