C4D won't help(other than the fact it'll use dual processors if you have them), the render times in C4D are quite high when you start using advanced render options such as radiosity, heavy raytrace elements, high anti-aliasing quality, etc. Heck,....I have a Bryce render in progress of a room with 1 volumetric spot coming through a window made of "Light Glass", rendering on "Normal" setting and the first pass render time was 23:17:40 ! Rendering really has not much to do with the video card or RAM, it's processor intensive. So,.......if you're using alot of high quality render elements, high render times are just the price of doing business, so to speak.

"Any club that would have me as a member is probably not worth joining" -Groucho Marx