Glossary:DIMM
A DIMM, or Dual In-line Memory Module (sometimes known as a "RAM stick") is a small circuit board, one or more of which very commonly serve as main working memory in a computer. It has contacts on both sides of an edge which mates with a socket (hence "Dual In-line") and contains a number of individual memory chips. There are several different standard sizes and each may contain various types and speeds of memory chip. An SODIMM is a smaller variant commonly used in laptops.