Originally Posted by lyons_tavern
I have 2 slots for memory each with a 512 mb chip. I want to have 2 gb in total. the 2gb and 1gb chip are just about the same price. Do I buy one 2gb chip and could I leave one of the 512mb chip in the other slot.
Depends on what your laptop will take.
Run the scanner & memory adviser here - http://www.crucial.com/#
That will tell you what it is capable of & the ram that will be suitable. You can then either buy their recommendation or have a shop around to see if you can get it cheaper elsewhere.