I've got an HP Pavilion dv5z-1000 Notebook. It has 2 gigabytes of memory/RAM/whatev, and it runs alright. Faster than my previous laptop, anyway. Well, I want it to go even faster than "alright". I've heard RAM is the solution. But I know little about RAM. I can probably install a new RAM chip in the computer, but I don't know how to go about buying it.
What do I need to know about buying RAM? Other than varying chip size, is there anything else that varies about them? If so, how do I figure out what kind of chip will work with my notebook? How better would the performance be if I bought another gig? Are there any drawbacks to putting in more RAM? If so, what else should I add to my computer to prevent those drawbacks? Last but not least, where should I buy from? I know newegg is a good site.
Any help is appreciated.
EDIT: Looked some stuff up. Is it a better CPU that I'm looking for? I want things to run a bit faster.