I was doing some thinking about how much RAM to upgrade on my machine. I am going to buy a PC2100 chip because I tried to install a PC2700 and it caused my machine to freeze. That being said, is it worth buying a 1GB chip or a 512 MB chip? I ask this because I am sure I will buy a new laptop in the next two years and am aware that most of them are PC2700 and won't be able to use this newly purchased chip. Or am I wrong? I would like to make the most use of the new chip by being able to use it on a newer machine, but it's not a dealbreaker. Any thoughts would be greatly appreciated.