Notebook Computer Memory

I am planning to buy a notebook computer one of this days, but I am having a hard time to decide, but one thing for sure I really want for my notebook computer is to have a large memory. Having a large notebook computer memory is really a must for me. I always store a lot of important files to my computer and having too many files stored in the computer will surely slow down your computer like a turtle and I don’t want that to happen. I just hope I can find what I am looking for.