The focus in this article is going to revolve around C4D’s Physical renderer, which uses Intel’s Embree as its backend.
That is, unless you use a third-party option. Whichever of these renderers you use will dictate which hardware you should prioritize in a new workstation. A secondary built-in renderer is AMD’s Radeon ProRender, which can render to the CPU, but has primary focus on the GPU. Cinema 4D’s default render engine is Physical, which is completely CPU bound, and thus benefits greatly from high core counts.