Rx 480 supported (sort of) in Sierra DP2

[scordinskyc]

Hello,

I have an RX 480 working fine in my Mac Pro 4,1 (flashed to a 5,1) working fine. Except for HDMI audio. Are there any ideas about how to tackle this component? I did read that the HDMIAudio.kext that everyone uses (including myself -- it worked great on my Geforce 650 Ti Boost that I was using until now) was supposed to work with AMD cards.

Thanks!

[jmp473]

460 has worked OOTB for some time in Sierra

Just not very fast

Me = not so lucky.   I purchased a Sapphire Nitro 460 for my Mac Pro 3,1 - but no boot screen, no boot at all with the Sierra installer. 
Got hung up installing Sierra using a Dell HD 5770 flashed w/ Vervet (even starting from a clean install of El Cap. on new drive - can't think what might be the problem other than the 5770 - Ram and Drives seem OK - no other hardware).  Was really hoping the 460 would allow me to install Sierra.   Was it wrong to assume the installer would load the kexts for basic operation at least?   
   

  Old   HD 5770
  Device ID:   0x68b8
  Revision ID:   0x0000
  ROM Revision:   113-C0160C-155
  EFI Driver Version:   01.00.436

  New   RX 460
  Slot:   Slot-1
  PCIe Lane Width:   x8
  Vendor:   ATI (0x1002)
  Device ID:   0x67ef
  Revision ID:   0x00cf
  Kernel Extension Info:   No Kext Loaded

[BrianBotts]

Any benchmarks from your RX 480?

So far it looks like the RX 460 isn't performing well.

[mucunucu]

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