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MP 1,1-5,1 RX 580 and 5770 in 2010 Mac Pro (5,1)?

MotionManSF

MotionManSF

macrumors newbie
Original poster
Jul 15, 2020
24
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I currently have a Sapphire Radeon RX 580 8 GB PCIe GPU in my 2010 5,1.

I also have a ATI Radeon 5770 1GB.

I would like to have both installed and working, but I have, thus far, been unsuccessful.

The 580 is powered by a dual mini-6-pin to 8-pin. The 5770 is powered from a drive bay SATA cable (SATA to 6-pin).

When I have them both installed, I get no video from the 580 and just a boot screen with the apple and progress bar that stops halfway (for hours before I give up) on the 5770.

What am I missing? Any thoughts?

Thanks.

MotionMan

81aQTxxcCJL._AC_SL1500_.jpg61jQV+UBboL._AC_SL1000_.jpg
 
I just learned that, apparently, multiple GPUs of different makes/models does not work past High Sierra on the 5,1's.

Bummer.

MotionMan
 
It is because one is metal, one is not.
Why do you want the 5770 in there anyway.
 
tsialex said:
OpenCore or the recently updated rEFInd work with a RX 580 for pre-boot configuration support.
Click to expand...

For whatever reason, I am trying to avoid boot managers. I am looking into flashing the 580, so this may be becoming more of an academic exercise (which, apparently, has run into a huge roadblock).

MotionMan
 
MotionManSF said:
Boot screen.

MotionMan
Click to expand...
AND HD7950 and HD 7970 can both be EFI flashed for bootscreensand are both Metal.

The HD 7970 is not so far behind the RX 580 - I have an EFI FLASHED SAPPHIRE DUAL-X 3 GB = Nice, strong, reliable card.,
 
I have an install question. I just got rx 580 installed - 2 six pin it lights blue. But no hdmi. My drive already had Mojave. Is there anything I need to do?
 
Have you tried display port.
Which rx580 is it?
Does it have two 6 pin connectors.

edit: sorry should be one 8 pin on the gpu.
 
Last edited:
Yes, 2 six pin cables. I only have hdmi no display port. Wondering is the firmware/Mojave issue
 
Sounds right, 6-8 pin. I had to get a second cable. I did get a red light at first then after properly connecting I get blue.
 
Omedus said:
Sounds right, 6-8 pin. I had to get a second cable. I did get a red light at first then after properly connecting I get blue.
Click to expand...
You can't power a 6+8 card from just the backplane PCIe AUX connectors, unless your card is one that can be connected to an eVGA PowerLink.

There is not enough power, the workaround is to use the PowerLink to balance the power draw equally from the two backplane connections or get 6-pin powered from two of the SATA power connections.
 
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I may have misunderstood, I connected two 6 pin cables to the back. I’m wondering if issue is Mojave/firmware. I installed a cloned ssd with Mojave. There is talk of H Sierra
 
Omedus said:
I may have misunderstood, I connected two 6 pin cables to the back. I’m wondering if issue is Mojave/firmware. I installed a cloned ssd with Mojave. There is talk of H Sierra
Click to expand...
You have to first power the GPU correctly. A 6-pin cable on a 8-pin receptacle will not work, a 6-pin to 8-pin cable will damage the backplane.

Second, do a clean install of High Sierra with your AppleOEM GPU, don't use patched/hacked installs, check the BootROM release and if needed upgrade to the current High Sierra release MP51.0089.B00.

After you get your GPU working with 10.13.6 then you start with Mojave.

forums.macrumors.com

MP5,1: What you have to do to upgrade to Mojave (BootROM upgrade instructions thread)

Please fully read this first post, you will probably find that you have one or more problems described into the various notes below. Mojave will only install if you have upgraded your BootROM to the current release and your Mac Pro have a Metal capable GPU*. If you are trying to install Mojave...
forums.macrumors.com forums.macrumors.com
 
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Good morning MacRumours Hive brain.

I'm looking for an alternative for my Sapphire Pulse RX580 to act as a standby 'spare' in case my Sapphire unit gets fried in my TB3 USB recabling project.

any one tried this Gigabyte RX580?
It has a nice 3 x DP1.4 outputs compred to the Sapphire Pulse RX580

www.gigabyte.com

Radeon™ RX 580 GAMING 8G (rev. 1.0/.1.1/1.2) Specification | Graphics Card - GIGABYTE Australia

Discover AORUS premium graphics cards, ft. WINDFORCE cooling, RGB lighting, PCB protection, and VR friendly features for the best gaming and VR experience!
www.gigabyte.com www.gigabyte.com
 
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