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Antwat

macrumors newbie
Original poster
Apr 3, 2022
4
0
Hi all,
I have spent weeks on this and cannot seem to find the right answer. I learn as I go but I am exhausted now. I have a Mac 3,1 that is too good to recycle. I upgraded to 32MB RAM and an SSD. I thought the graphics card update would be easy. It has a GT 210 in it that runs DosDude's Mojave patch great. I read somewhere that a graphics update must be nVidia and that it must have a Kepler chip so I bought a used GT 730 with a kepler chip and I could not get to finish the installation (it kept freezing on the grey screen with the apple logo but before the black screen). I then read that the GT 730 is not metal so I should get a GT 710 with kepler and metal (and DDR3 memory) so I ordered a brand new one. That came and I get exactly the same issue with freezing after starting the installation. I install with the GT 210 in it for booting and the GT 710 or GT 730 as well for the drivers. I have no idea what I am doing wrong as others seem to have both of these cards in their MP3,1 machines. Please help! Thank you
 

Antwat

macrumors newbie
Original poster
Apr 3, 2022
4
0
I worked it out. i’ll put this in the correct section ?
 

Antwat

macrumors newbie
Original poster
Apr 3, 2022
4
0
3 weeks to sort this out but i finally did it! Here are the step-by-step instructions to get a pretty decent graphics card upgrade for your Mac Pro 3,1

If you do not follow these instructions, you will not be able to finish the Mojave installation as it will freeze in the grey apple screen. if you just put the new card in with the old card and switch cables, you will get a black screen

The GT 710 and GT 730 I bought are compatible with Mojave upgrade ?

Steps to install:
1. install DosDude Mojave patch with only bootable Mac graphics card in the pcie slot (in my case, a GT 210)
2. don’t add the legacy video patches in post install patch
3. turn off the MacPro 3,1 and remove Mac bootable graphics card (Mojave in a Mac Pro 3,1 does not boot 2 different video cards)
4. install non-Mac GT 710 or GT 730 graphics card (i bought the ones with kepler chip, which is the GK208). note that the GK107 is a fermi chip and is not metal compatible. you can find out the chip type from GPU-Z program
4. switch on computer and Mojave will recognize either the GT 710 or GT 730 graphics cards

I read that the GT 710 and GT 730 with fermi chips (GK107) or DDR5 RAM with 128-bits do not work on Mac Pro 3,1s

I bought the metal compatible GT 710 from Amazon Canada (metal compatible, DDR3, 64-bit, kepler GK208 microarchitecture):


(The card bracket is full size and comes with a low-profile bracket too. Sold by MPC Computers in Toronto, tel. 647-666-3060)
 

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Last edited:

Borowski

macrumors regular
Oct 22, 2018
222
52
Both cards are Kepler-based:
GKxxx=Kepler, metal-support
GFxxx=Fermi, no metal-support, needs patcher for install
 
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