Having successfully installed OS X Mavericks 10.9.4 on an HP EliteBook 8560p HD3000 Graphics with full functionality using this guide and PBI CE. I though I would try to do the same on an HP ProBook 6570b only with AMD Graphics. All proceeded as expected, however I have a couple of outstanding issues.
Firstly I have no sound, even after cache rebuild using Kext Wizard.
Second the battery does not appear to be supported.
Third occasionally on boot the whole screen is displaced about one inch to the left, however a re-boot seems to resolve this issue.
Thanks for this fantastic guide and the PBI CE. This guide and application has allowed me to run OS X.
Finally I am still keen to get my EliteBook 8560p running OS X with AMD Graphics, any pointers would be gratefully received.