What do you have to look out for when buying RAM for your Computer? I already know my computer takes 'DIMM' and has two slots, one filled with 128MB RAM. I'm planing to install 2 x 512MB RAM into my computer, making it 1GB. Since my computer has only shitty-128MB RAM, and can only handle a maximum of 512MB RAM in each slot. 1GB RAM is good....right? i think the Upgrade would be well worth the money and it would mean i can install Ubuntu.