- Joined
- Jun 21, 2014
- Messages
- 8
- Motherboard
- MSI Z370 Gaming Pro Carbon
- CPU
- i5-8400
- Graphics
- Vega 56
- Mac
- Mobile Phone
Quick FYI for everyone. I recently performed a Yosemite install (z77x-ud5h, 3570k, Sapphire R9280X, Chimera) and the graphics performance with Mac Pro 3,1 was not accelerated. Using Heaven benchmark (9fps) and the old Cinebench (35 fps) confirmed this.
I changed the system definition to Pro 6,1 and now have accelerated graphics without deleting any kexts. Cinebench, 70+fps, Heaven on High with AA 4x and Tessellation normal (2560X1080), 39 fps. The Heaven figures roughly match Windows 8.
Unfortunately, the 3570k is now limited to 3.4GHz where under 3,1 I had full overclocking
I changed the system definition to Pro 6,1 and now have accelerated graphics without deleting any kexts. Cinebench, 70+fps, Heaven on High with AA 4x and Tessellation normal (2560X1080), 39 fps. The Heaven figures roughly match Windows 8.
Unfortunately, the 3570k is now limited to 3.4GHz where under 3,1 I had full overclocking
I changed my profile to 5,1 and it more than doubled the LuxMark score of my dual 280x's. Went from 2100 to 4500. Insane. Everything runs better too. It must have to do with how OS X deals with GPUs according to what model it thinks it is running on.
Just a theory, someone correct me if I am wrong.