DIMM refers to a type of memory module commonly used in modern PCs and Laptops.

DIMMS have a 64-bit data path and are widely used in PCs with 64-bit processors as they don't need to be doubled up unlike SIMMS.

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

They come in either a 144 pin or 168 pin package, the 144 pin module is commonly used in laptops and the 168 pin modules are used in most modern PC motherboards.

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