Patrick, do you or any other expert know the answer to my question? I have a Compaq Presario PC with 2 memory slots, currently with a 512Mb PC2700 memory chip in each one. I believe the motherboard is an ASUS A7N8X. I have read somewhere (but can't remember where) that the maxiumum memory I can have is 1 Gb. I have a feeling this information dates from a time when 512Mb chips were the biggest available. I would like to upgrade to 2 Gb using 1 Gb chips. Do you know if this motherboard would support this?