My computer specs. shows my current RAM is: DDR266 PC2100. I want to add more RAM, I currently have 1GB installed in 2 slots- 2x512MB. I'm thinking of getting a 1GB stick of RAM to add so I will have a total of 1.5GB. Is DDR333 PC2700 RAM compatible with what I have? I'm guessing it is and the clock speeds will run at what I have now but I'm not 100% sure.