One more question comes to my mind. In a G5 we can only use Mac preparated graphics cards, right? If you buy one for x86 computers it will not work in a G5. But in the Sam 460 it seems to work because you can use new Radeons for 4k displays. Is this because Sam uses Uboot? Is there any chance that in G5 it will be possible to use "standard" graphics cards, too? Otherwise it will never be possible to use 4k monitors with a G5 because we can not flash them as Mac cards, right?