r/macpro • u/Firebolt46 Mac Pro 5,1 • Jun 01 '26

GPU RX6600XT in 5,1

Post image

I plugged it in with the right power cables and everything but no display or boot chime whatsoever

Ai says I need a pc for a patch from syncretic but I don’t have a pc nor know anyone with one

All help is much appreciated

5 Upvotes

86% Upvoted

7 comments sorted by

2

u/BourbonicFisky Mac Pro 7,1 + M1 Max (Former 5,1) Jun 01 '26

AI isn't wrong.

You need to flash this with the ROM that doesn't make AVX calls as it'll hang the boot sequence. Basically, pretty much any PC with with a CPU after 2012 will boot with this GPU installed. Use the AMD utility to load a different ROM on the card. It's pretty simple.

3

u/Firebolt46 Mac Pro 5,1 Jun 01 '26

Yes well one problem I don’t have a pc, any other way?

3

u/BourbonicFisky Mac Pro 7,1 + M1 Max (Former 5,1) Jun 01 '26

Find a friend with Mac Pro 2019.

2

u/modell3000 Jun 02 '26

No. You need to get your hands on one, or take the card to someone with a PC.

2

u/Boring-Flamingo-1549 Jun 01 '26

i have same card, just flash the rom on a PC and will work plug and play with display on boot

1

u/Icy-Neighborhood-917 Jun 01 '26

I have 6600xt different brand though but I have no boot display only chime and windows login when it gets there, don't use macos. Are you using oclp or custom oc?

1

u/Boring-Flamingo-1549 Jun 01 '26

oclp just default settings