Any idea as to why my 5750 can't go beyond these half year old drivers without a completely messed up framebuffer?

As for now replacing ATIFramebuffer.kext ATISupport.kext and ATI5000Controller.kext with these ones does the trick without too many glitches but I would like to use the newest kexts if its possible.
It's only geekbench that crashes because of this for me but still i feel like this solution wont help much as i fear these kexts will be broken by a framework update in the near future.