Random-access memory, or RAM, is the working memory of a computer that loads and runs running programs. The amount of available RAM memory affects the performance of your computer, and the more memory you have in your computer, the more applications you can store in the working memory. Memory speed is measured in megahertz (MHz) and CAS latency (CL). Memory is usually a DRAM type of self-refreshing memory. It's a good idea to get enough RAM memory, for example, graphics cards integrated on a motherboard or processor usees computers RAM memory.