Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.


macrumors newbie
Original poster
Sep 20, 2011
Hi everyone
I have used the dosdude hack to install Mojave on a mac pro 3.1
The thing is, can i use simultaneously a 5770 to boot from another installed disk with 10.7 on?
Can 5770 and rx 580 work simultaneously in the mac? If yes, where can i get power for the 5770?

Is the total wattage of both cards installed handled ok form the logic board or will i brick it?

If you say that both cards can be installed, which card works in every different OS?


macrumors member
Nov 11, 2010
Sorry, I can’t answer your questions but a possibly complicating factor is that my Sapphire RX580 is over 2 slots wide (about 2.2 slots) so it might stop you using the adjacent slot. Possibly you’ve already factored this in.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.