Not completely true, Jonj1611.

Was not wanting to do anything but help, so did not point out earlier that other 3D programs do, in fact, have trouble with ATI cards. Maya has troubles with ATI - which is interesting, since Maya, like Cinema4D is based on a binary kernal. I'm a Maya user, so I switched to nVidia card an ASUS nVidia mobo for just that reason - maximum compatibility between hardware and software. Not wanting to belabor this minor point, but I can think of at least two other 3d apps that do not play nicely with ATI.