The goal is to get this running smoothly on low end machines. So yes... the GPU is part of it, but that's not the whole reason. The difference may seem negligible, but this extends to the way I can expect the game to be played. You see, the platform(s) I focus on will dictate many design decisions moving forward. For example, the length of individual stages. I don't know about you, but I find a typical laptop setup does not lend itself well to long play sessions. Trust me, the overall experience is different enough.