I am planning to upgrade the RAM on a laptop that I recently purchased. The question I have is - is it better to keep all the RAM sticks identical (manufacturer, make, model) or does it not matter? The current setup is that there is a 1 gig stick and 1 available slot for additional RAM. The max it can handle is 2 gig. The current stick is some off-brand that you normally find in prebuilt computers. Since the cost of new RAM is not expensive, using 2 identical sticks is not a problem. But, if there's no difference, then I'll just buy 1 stick. Let me know computer guru's! Thanks! If it helps, here's a link to the type of RAM that I need: http://www.crucial.com/store/partspecs.aspx?imodule=CT12864AC53E