After Effects doesn't use the GPU for very much. If you check the system requirements, it just needs an OpenGL 2.0-capable system. Any modern graphics card meets this requirement.
See this page for more info on how AE uses the GPU: GPU (CUDA, OpenGL) features in After Effects
Now, as you can see at that link, there are some specific requirements beyond that if you want to use the ray-traced renderer to create 3d geometry in After Effects, but that feature is considered obsolete. After Effects now has a much more powerful way to do 3d - Cinema 4D is included with After Effects now! details of CINEMA 4D integration with After Effects CC
There are some third-party plugins (like Element 3d and Red Giant Universe) that do make use of the GPU, but those plugins and their GPU requirements have absolutely nothing to do with AE's old ray-traced renderer or its requirements.
So, U really don't need Ray Traced if you have cinema 4D OR ELEMENT 3D?
Right. The ray-traced renderer is completely separate from those two things and, in my opinion is a pretty pointless feature. I've never used the ray-traced renderer and most professionals I know have never used it either. There's a reason Adobe isn't developing it anymore!