Radeon RX 6800 / RX 6800 XT / RX 6900 XT for macOS -> AMD Navi RDNA2 Support add...
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[Sticky] Radeon RX 6800 / RX 6800 XT / RX 6900 XT for macOS -> AMD Navi RDNA2 Support added in 11.4 Beta  

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New Member
Joined: 2 weeks ago

@nando4, Thanks a lot, your suggestions worked.
(now it's working flawlessly in windows 10 both testing mode, and also done the substitution for normal mode since softwares were fighting me in testing mode).

Thanks also to the community that shared in this forum, it's just an amazing resource.

My build:


2016 15" MacBook Pro (RP450) [6th,4C,H] + RX 6900 XT @ 32Gbps-TB3 (Razer Core X) + Win10 & macOS 11.6 [build link]  

nando4 liked
Noble Member Admin
Joined: 5 years ago

@dzero, good to hear of your success. Your installation steps have been transferred into the following build guide. Consider adding photos and some benchmarks to finish it off.


eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M.2 (ADT-Link R43SG) + Win10 1803 // compares M.2 vs TB3 performance inc unoptimized H-CPU BIOS [build link]  

Prominent Member
Joined: 5 years ago

Reading here your experiences seems that XFX AMD Radeon RX 6900 XT (RX-69XTAQFD) XFX Speedster SWFT 319 works fine as eGPU on macOS right? With a big eGPU like Razer Core X. I've seen some implementation here.



Can you confirm master? 🙂 

This one



MacBook Pro 13" 2020 Touch Bar M1 8-core CPU 8-core GPU - 16GB unified memory - 512GB PCIe SSD
MacBook Pro 13" 2020 Touch Bar i7 quad-core 2.3Ghz - 16GB RAM - 1TB PCIe SSD

my awesome Radeon VII eGPU
my Mantiz Venus extreme mod with Sapphire Nitro+ RX Vega 64

2018 13" MacBook Pro [8th,4C,U] + Radeon VII @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.15 [build link]  

Founder Admin
Joined: 5 years ago

@ikir, I tested a XFX Speedster MERC319 AMD Radeon RX 6900 XT which is slightly different. That card has an USB-C output. It worked great in macOS. I believe the cooler design and dimensions are very much the same on both cards so fitment with eGPU enclosures may require some modifications. When I installed the MERC319 RX 6900 XT inside Mantiz Saturn Pro, I had to remove a small bracket.

The main thing to check for software compatibility is the card ID. Device ID 1002 73BF is recognized in macOS and will work right away. 


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external graphics card builds
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2021 14" Microsoft Surface Laptop Studio [11th,4C,H] + RTX 2080 Ti @ 32Gbps-TB4 (WD_Black D50) + Win11 [build link]  

ikir liked
Mo Sha
New Member
Joined: 4 years ago

I have read all the posts in this thread but still do not have a clear answer that

"does macos support HDMI 2.1 on rx 6600/6800/6900 that navi 2x GPUs already work in the lastest macos"? 

I wish to drive my LG C1 OLED (4k 120hz 444 hdr) on macOS, any solutions? Thanks!


To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.


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