I've always gone in figuring that as long as you have a decent base, even if its just the minimum, you'll get your project done (outside high end professional video production which due to the sheer size/complexity would push some systems to a crawl). You're just going to have to wait that extra time rendering.
That's why they invented sleep! You simply set your project to render when you crazy. You wake up and it's done! The CROWDS REJOICE!