I just went through the Cycles tutorial - I didn't made the donuts but played around with the monkey and materials.
My PC is damn slow. Now I realize my graphic card isn't very good, but it should be ok for what I want to do.
It was fun! I also worked on a 1-page design document for the point & click/adventure game that I'm making in low poly.
Not sure yet if it's gonna be a point&click - with scenes - or an adventure game (3rd person, 2 characters) with puzzles.