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For anyone interested, I've flashed the original BIOS of the card and now I have the OCLP boot screen menu. Till then, creating the OCLP with amd gop inject worked fine as well. But these ebay ads are misleading, be careful.
Did you need a PC to flash?
 
I bought the same card from the same seller and have issues trying to enable GOP as it seeems that the BIOS from the card has been modified. I can't seee the OCLP menu. The sellers marks it as unmodified GPU but seems otherwise. Did you manage to enable GOP to get the Boot menu?
I didn't try to enable the GOP for a boot menu. Otherwise the card works well.
 
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I used a windows installed in the same Mac pro. It worked well and it allowed me to use GPU-Z to get info on my exact model to find the proper original BIOS file but apparently you can do it using linux.
Thanks, I was a bit worried to do this, since if the Flashing fails in any way, you won't be able to fix it without using a PC? Is this a real concern or am being too cautious?
 
Thanks, I was a bit worried to do this, since if the Flashing fails in any way, you won't be able to fix it without using a PC? Is this a real concern or am being too cautious?
Definitely not an expert but for what I gathered it is a delicate process. Make sure that you are using the correct BIOS version for your card and when you do the flashing make sure that nothing will interfere in the process.

I used this as a guide (it's in spanish):

 
Definitely not an expert but for what I gathered it is a delicate process. Make sure that you are using the correct BIOS version for your card and when you do the flashing make sure that nothing will interfere in the process.

I used this as a guide (it's in spanish):

Yes, that's why I've shied away from doing it on doing it on a Mac. Ideally a PC with a built in GPU and a PCI GPU that you flash, then if it goes wrong you can least recover from it
 
Thanks, I was a bit worried to do this, since if the Flashing fails in any way, you won't be able to fix it without using a PC? Is this a real concern or am being too cautious?
Might be "a bit too cautioues". 😉

As far as it's for one of the Sapphire RX 580/590 Pulse/Nitro+, most of these cards are "Dual Bios". So you can leave the card's own (known working) BIOS at switch position 1 (or left), boot the card with this one to Windows. Then, when booted, switch to the other position and flash the BIOS you want to test to this with AMDVBFlash.

The BIOS flashed is allways the one, the switch is set to. And switching to the other position with the up and running machine does not do any harm. So if anything goes wrong and the flashing fails or ROM does not work, switch back to the working one and start from scratch.
 
Hello, recently I was lucky enough to have a very good bargain on a MacPro 6,1 (8 cores @ 3,70GHz / dual D300) and a Sonnet xMacPro Rack. The Sonnet rack is equipped with a Thundebolt 2 Echo-III expansion box with three PCIe x8 slots and everything is working very well, my plan was to install a GTX-1060 in the Echo and using it as eGPU both from OSX and WIN10 side. The 1060 has a 512Kb eeprom, enough to accomodate a modified VBIOS for Mac so I went thru the process described in MacElite, the script was apparently succesful in modfying the stock firmware of the GPU and the flashing process went straight, with no errors. The problem is that now the 1060 when installed in a real PC (not the MacPro 6,1 running BootCamp) is stuck at BIOS splash screen (the step where you can choose if enter BIOS settings or boot a different device) and don't go ahead with Windows 10 loading. Is this a normal behaviour? I thought that flashed Mac enabled GPU was transparent on a PC side. When flashed back to its original PC bios the 1060 works normally and Windows load as expected. The BIOS of the nVidia is the same EVGA 86.06.45.00.60 stored of TechPowerUp site.
I have also tried to flash the 1060 VBIOS from MacElite but while the page says it is for a 6 Gb VRAM card, the flasher refuse to proceed because it says it is for a 3 Gb version, apparently they either uploaded the wrong version or the description is incorrect (mine is the 6 Gb version).
I would prefer to have the GPU flashed for real instead to go with OpenCore, the part of making the eGPU working with the MacPro 2013 will be quite a PITA with BootCamp drivers, I know it from various post about this around the web, but I want to try anyway. Do someone followed the MacElite guide with good results with nVidia GPUs?
 
what is the reality of a "no boot screen" GPU? Skip straight to log in or jump thru hoops or plug and play?
MacPro3,1.
 
I'm already on Big Sur and will bring to at least Monty after the GPU upgrade, and perhaps Ventura, if it'll take it.
Prefer either card over the other?
 
I'm already on Big Sur and will bring to at least Monty after the GPU upgrade, and perhaps Ventura, if it'll take it.
Prefer either card over the other?

It all depends on which card you can obtain at reasonable price.
I would prefer the Quadro K5000 over the GTX680, but for your MP3,1, I suppose RX580 still can work, can't it?
 
prolly, just looking for the easiest most reliable midpoint least expensive way in, as my 3,1 is used strictly as a server.
Only reason I want to bring it up to Monty is that's the cut off line for Emby. And one less OS that I need to remember.
Though the OEM card may work, it would be a serious drag.
The GTX seemed to be the happy medium. Seeing PC ones on ebay for ~$60
 
So, as it's a well known fact that Navi/RX 6xxx cards do not work with the cMP and any OS past Monterey, are there any known limitations concerning the Vega-cards too?

Is there really nothing past Polaris working reliably with Ventura/Sonoma/Sequoia in a 4,1/5,1?
 
Yes! I’m using a Vega 64 with Sequoia which works fine in most cases. But some apps like The Witcher 3, which worked with no issues with Polaris cards, refuse even to launch.
ok, but this dont consider "app" it is moremoreof a "game"
and why even consider gaming on macos on a MP5,1 when you can easily bootinto Windows 7/10/11 and can get much higher performance with these GPU? Vega 56 get me 30%-40% higher score in benchmark on Win11 than on Macos with OpenCore, but this could be also due to OpenCore setup which may very.
 
ok, but this dont consider "app" it is moremoreof a "game"
Yes, but from the OS-side any game i still nothing more than any other app, making us of a GPU's 3D-capabilities.

and why even consider gaming on macos on a MP5,1 when you can easily bootinto Windows 7/10/11 and can get much higher performance with these GPU? Vega 56 get me 30%-40% higher score in benchmark on Win11 than on Macos with OpenCore, but this could be also due to OpenCore setup which may very.
Sure it's better to use Win for gaming. And i also get more than 50% higher scores with benchmarks like Unigine Heaven with Windows (DX11) than with Mac (OpenGL). No matter if i check the RX 6800 or the Vega.

heaven_win.png


heaven_mac.png


But this doesn't explain why in some cases Vega works nicely without any issues with Sequoia and in other cases apps just refuse to launch.
 
Is there any chance, some tinkering with the boot-args might help to solve the Vega-problems?

At the moment they are set like this:

Code:
<string>keepsyms=1 debug=0x100 -lilubetaall shikigva=128 unfairgva=1 agdpmod=pikera radgva=1 -wegtree ipc_control_port_options=0 -nokcmismatchpanic</string>

Don't really know what all these do. Maybe somebody else does.
 
Hello everyone,

Currently running on 2010 Mac Pro 5,1 RX580 Nitro, Monterey.

Purchased this machine for a really good deal and use it as my daily for adobe work building emails, video, and photo work.

Been looking to upgrade the GPU to the 6000 series. 6600xt is what I'm considering. Only issue with that is I don't own a Windows computer to flash the card. Windows is successfully installed onto this computer via tiny11.

Would it in theory be possible to install the 6600xt in slot 1, RX580 in slot 2. This is assuming the they would even fit and that there would be enough power to even run both with the 580 drawing more power. One of the GPUs would need an external power source if this were to work, or potentially pixlas mod I assuming since the two power slots will already be used by the other gpu

But install both cards, boot into windows, and flash the 6600xt to work properly?

Assuming this would work but both cards wouldn't fit.
Would a PCIe riser cable work to "fit" both cards into the machine to flash the 6600xt?
 
Hello everyone,

Currently running on 2010 Mac Pro 5,1 RX580 Nitro, Monterey.

Purchased this machine for a really good deal and use it as my daily for adobe work building emails, video, and photo work.

Been looking to upgrade the GPU to the 6000 series. 6600xt is what I'm considering. Only issue with that is I don't own a Windows computer to flash the card. Windows is successfully installed onto this computer via tiny11.

Would it in theory be possible to install the 6600xt in slot 1, RX580 in slot 2. This is assuming the they would even fit and that there would be enough power to even run both with the 580 drawing more power. One of the GPUs would need an external power source if this were to work, or potentially pixlas mod I assuming since the two power slots will already be used by the other gpu

But install both cards, boot into windows, and flash the 6600xt to work properly?

Assuming this would work but both cards wouldn't fit.
Would a PCIe riser cable work to "fit" both cards into the machine to flash the 6600xt?

You are completely forgetting that the MacPro5,1 can’t even POST with an unpatched RX 6xxx GPU installed, the Mac Pro firmware crashes the moment the unpatched RX 6xxx GPU firmware is loaded (right after the RAM is checked).

Is not a matter of Windows, is a matter to find a compatible PC that can POST/boot with a NAVI 2x GPU - several older PCs also does not boot with a RX 6xxx GPU - to patch the GPU firmware.

Btw, Intel Macs since the 2018 Mac mini are compatible with NAVI 2x GPUs and can be used to flash a NAVI 2x GPU via eGPU or internally (2019 Mac Pro). Since the tools to do it require native Windows/Linux to patch the NAVI 2x firmware, you can't do it with macOS or virtualized Windows/Linux.
 
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