Hm, all I know is there is an edited BIOS version enabling some special power saving feature supported by OSX.
Not sure but nearly: The internal CPU-GPU can be turned off in BIOS which is necessary for the dedicated GPU to work on OSX.
I think OSX on the GA20J is possible, good luck and let us know the results.
PS: On Ebay there´s a GB guy offering Hackintosh services like preinstalling OSX for your individual PC. He seems to know what he´s doing a lot. If you don´t mind the bucks just let him do the work for you. Or at least he can let you know if and how this works out.
