I have been thinking about upgrading my desktop RAM(1GB, 2x512MB) and my laptop(1GB, not sure about the sticks), but I would rather remove the old RAM and use 2 or less new sticks. I know that when I upgraded my desktop, I had to figure out the placement on the motherboard for the best results and how much it could handle. I also had to match the MHz speed(clocking speed?). However, if I were to buy 2 2GB sticks, do I need to match the previous MHz speeds and placement?
Also, the same thing about the laptop, but I have not figured out the speeds, placement or anything yet.