Has someone a working OSX on this hardware?
 

I've got it finally!

Burn slow iDeneb 1.4
Install on IDE HDD with the following options:

• SSE 3 Kernel
• SMBIOS Mac Pro
• AMD Fix

An nothing more.
Boot then from DVD into the HDD by pressing F8 during boot and enter the parameter rd:disk0s1 (the first partition of the first drive).

That will give you a working OSX without graphics, network etc. Now i will install the driver. Greets.