How to pick the right RAM for your computer Start by going to a website that sells the RAM online. There are a lot of online sellers. Go to the RAM finder on the site and enter your computers details. Normally it will ask what type of computer you have, the name of the manufacturer, the make, and the model number. Enter that information and it will bring up a choice of RAM sticks that will work in your computer. One key in selecting RAM is to be sure that you don't mix brands of RAM. If you have a Kingston RAM stick in your computer, add another Kingston stick. If you don't want to keep the stick that is in your computer order two of the same brand when you install the new RAM. Buying RAM on line is really easy and cost effective.