What do different windows 7 versions do for a gamer?

Is there any reason a gamer would need windows 7 professional or ultimate? Does it speed up games or is it all the same deal? (besides useless addons(for gaming at least)) or would windows 7 home work perfectly fine? (64 bit)|||No it just has more features.|||nothing,i have 7 Home Premium 64bit and its great for gaming,my friend has ultimate and theres 0% difference