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[Success] Radeon RX 6800 XT - Big Sur

Joined
Jan 7, 2014
Messages
38
Motherboard
Z490-A Prime
CPU
i9-10850k
Graphics
MSI RX 6800 xt Trio
Mac
  1. Mac Pro
Mobile Phone
  1. iOS
Success indeed! Thanks to this thread.

Flawless update from a Vega 64 to an MSI RX 6800XT trio, Big Sur 11.4. OC 0.7.0, iMac20,2.
Just added agdpmod=pikera in the boot-args. More than doubled my Geekbench Metal score, from 60750 with the Vega 64 to 150950 with the 6800's. Really? Hard to believe such a big jump between 2 recent cards.
I'll test it hard in the coming days.
 
Joined
Apr 5, 2021
Messages
14
Motherboard
Gigabyte Z590i Aorus Ultra
CPU
I9-10900
Graphics
RX 5500 XT
Success indeed! Thanks to this thread.

Flawless update from a Vega 64 to an MSI RX 6800XT trio, Big Sur 11.4. OC 0.7.0, iMac20,2.
Just added agdpmod=pikera in the boot-args. More than doubled my Geekbench Metal score, from 60750 with the Vega 64 to 150950 with the 6800's. Really? Hard to believe such a big jump between 2 recent cards.
I'll test it hard in the coming days.
Do you have a problem with the display off and on during booting process?
 
Joined
Jun 15, 2012
Messages
475
Motherboard
Gigabyte Z370 AORUS Gaming 7-F13
CPU
i7-8700K OC @ 5.1Ghz
Graphics
RX 6900 XT
Mac
  1. MacBook Pro
  2. Mac Pro
Classic Mac
  1. Performa
Mobile Phone
  1. iOS
One of my two displays takes 10 seconds longer to come on than first display. But it always comes on.

In super rare cases I get issue with same display losing picture randomly unless i unplug and replug it. That display had same issue with my 1080ti too on 10.13.6 that it does on 6900xt on 11.4. probably multiple factors in that. 120hz display port display, or some other reason. maybe just brand is fickle with macOS, who knows. A quirk i'm used to though and not one that was new to navi2 for me at least
 
Joined
Jan 7, 2014
Messages
38
Motherboard
Z490-A Prime
CPU
i9-10850k
Graphics
MSI RX 6800 xt Trio
Mac
  1. Mac Pro
Mobile Phone
  1. iOS
Do you have a problem with the display off and on during booting process?
Yes, same issue as most people during boot it seems, but the systems boots fine and works flawlessly after. I'm sure someone will soon find a way to fix the display off issue during boot.
 
Joined
Jul 20, 2018
Messages
22
Motherboard
X299 Sage 10G
CPU
i9 10980XE
Graphics
Radeon VII
Is it possible to get temperature monitoring with 6900xt?
 
Joined
Oct 24, 2013
Messages
797
Motherboard
Gigabyte Z590 Vision D
CPU
i7-11700K OC @ 5.2GHz
Graphics
RX 6800 XT
Mac
  1. iMac
  2. MacBook
  3. MacBook Pro
Mobile Phone
  1. iOS
Success indeed! Thanks to this thread.

Flawless update from a Vega 64 to an MSI RX 6800XT trio, Big Sur 11.4. OC 0.7.0, iMac20,2.
Just added agdpmod=pikera in the boot-args. More than doubled my Geekbench Metal score, from 60750 with the Vega 64 to 150950 with the 6800's. Really? Hard to believe such a big jump between 2 recent cards.
I'll test it hard in the coming days.
If you compare the 5700xt to the 2080Ti and then look at the 6800XT, it’s as if AMD made an exponential jump in performance in just one generation.

The 2080Ti used to tower over AMD’s offerings, and in one generation, the 2080Ti is now getting curb stomped. Kudos to AMD for innovating.

The only issue I have with this generation is high pricing and limited availability. But the technology is solid.
 
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