I got ATI 4850 working using EFI string.
I still cant sound to work. I patched DSDT for ep45-ds3r with ALC889 and that works great. but DSDT.dsl for p43-neo3-f doesnt have "Device (AZAL) or (HDEF)".
i've tried patching AppleHDA using ALC888.txt but still no sound.
anyone here got it working?
if so, what direction did you take?

thanx for help!