DIMM (Dual In-Line Memory Module), or a RAM Stick, is native 64-bit type of computer memory that consists of one or more RAM integrated circuits on a circuit board. Unlike its predecessor, SIMM (Single In-Line Memory Module), which is designed with only one row of contacts, DIMM is “dual”, in the sense that it has two independent contact rows. This feature allows it to provide a 64-bit data path.