On 2009.03.05, at 17:37, Luis Meleiro wrote: > Heya Stefan, > > I don't have the computer here right now, but I find that very odd > to be true. Even older (white) iMacs with weaker GPUs were able to > display 256, Thousands and Millions of colours. > I am in front of an INTEL silver iMac 20", 2.4GHz with Mac OS X > 10.5.6 and there is an option in the Displays' System Preferences > pane to select "Millions of colours". > > http://www.apple-history.com/?page=gallery&model=imac_early_08&performa=off&sort=date&order=ASC&range= I'm afraid Stefan is right, it is not the graphic card but the LCD panel itself: http://www.appleinsider.com/articles/08/03/31/apple_hit_with_another_millions_of_colors_lawsuit.html