No, sorry for the lack of clarity - After effects needs lots of RAM when rendering if you are doing things like 3d modelling and complex graphics. It will run Ok with 4gb of RAM but more is always preferred, 8gb should be fine for most people and unless you are multitasking with over 15 windows you should be Ok. All pieces of software run better with more ram but it doesn't matter if you have 8gb - it'll still run ok as you are unlikely to be using complex projects in things like speedgrade or after effects or premiere.