I have a HP Compaq Presario CQ56-103ST laptop and I want to learn whether it uses DDR2 or DDR3 RAM.
In its official web page, it is said that it has 3 GB DDR2 (1 x 1024 MB + 1 x 2048 MB).
(Obviously not so. It has only 2GB of RAM installed in a single slot.)
In this page, it is said that it uses DDR2 PC2-6400, DDR2 (non-ECC).
Windows says that memory size is 2GB, doesn't tell about its type.
(Yes, it is indeed 2GB.)
It looks like to be DDR2, but I can't make sure about that. I don't have the user manual of the laptop with me right now. Can anyone please confirm it for me? I'm going to purchase new RAM units, I need to know the RAM type. If I order a wrong type of RAM, it will be a lot of trouble for me.