I want to upgrade my old PC by adding more RAM (256 or 521). The problem is that I'm newb at hardware and stuff. I know there are many types of RAMs DDR, DDR2 and what not so which type should I buy?
Also, I currently have single chip with 512MB. If I incert lets say 256 next to it will it work, or does it has to be 512 like the first one?
There is my system report :http://testhst.puslapiai.lt/bu/Report.htm