Ati Radeon Hd 6790 graphic acceleration

[AlexSchr]

Hello,
Today i installed OS X Mavericks on my new system. But i dont get graphic acceleration. I installed OS X with this guide and got the graphic scale working with this. Everything works perfectly fine except the graphic acceleration.

After all it looks like this:
[video=youtube_share;gMwovRLT54M]http://youtu.be/gMwovRLT54M[/video]


My system:
Asus Rampage IV Extreme
Intel Core I7 4820k
AMD Radeon HD 6790
16gb Ram

I hope you can help me.

 

[Biggyskittle]

Same issue except I have 2x 6790s and I'm running Yosemite. I've been searching around the forum but can't find much that's current on 6790s other than

http://www.tonymacx86.com/graphics/...graphics-cards-framebuffer-personalities.html

Not entirely sure if it's related to the issue we are having

I have a DFI LanParty P45 T2RS and a E6700 core 2 duo. I was running a very smooth install of mountain lion but w/ a 4870. I also installed Yosemite with raid 0. Everything seems to work except graphics acceleration.

Any thoughts from the awesome people here?