I was recently given a Laptop with Vista and at times it seems to be really struggling for RAM, with just 1GB (2x512MB RAM). I haven't used a Vista machine with less than 4GB before.

Googled to find out how much RAM I could install without knowing what model Laptop it was and found on Crucial's website a software 'scanner' that identified what model Laptop it was and said that the manufacturer's recommended maximum for RAM is 2GB. 2x1GB DDR2 PC-5300

I believe you can get 2GB DDR2 PC-5300 memory cards - what would happen if I were to put those cards into the Laptop? Would the motherboard or something else simply be unable to handle it? Would it not work, or work no better? Or could it work better?