the easiest way to boost your pcs performance is to give it more ram. then if you can a graphics card. to do this you will need to find out what your ram is, and how much your mobo will take. if you still have the manual that came with it, it will tell you in it. if not you could have a look at the board as most say the model on them, or and this is the easiest way without the manual, you could download cpuz and it will tell you all the info about all your pc. once you know which mobo it is go to the manufactors website and it will tell you how much of which type of ram you can install.