How to increase windows 7 speed

Windows 7 is very fast then all other old version of windows like vista and xp,But it depend on the user how they rate windows 7.Many users who install this operating system in there old PC with 1 or 2GB ram and all other old features may face this speed problem because windows 7 is made to give user ultimate graphics and experience.In this post we will deactivate some graphic and features of