DIMM refers to a type of memory module commonly used in desktop PCs, laptops, printers and other devices. DIMMS have a 64-bit data path and are widely used in PCs with 64-bit processors, because they do not need to be doubled up, unlike 32-bit SIMMS.

The dual inline part of the name refers to the way the chips are mounted on the module.

DIMMS come in a variety of packages, each with a different amount of pins. Packages include:

100-pin module (DIMM)
144-pin module (SO-DIMM)
168-pin module (DIMM)
184-pin package (DIMM)
200-pin module (SO-DIMM)
204-pin module (SO-DIMM)
214-pin module (MicroDIMM)
240-pin module (DIMM)

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