SODIMMs

SODIMMs, or small outline dual inline memory modules, are basically DIMMs that are smaller in size. SODIMMs are primarily used in laptop computers where smaller components are always the ideal. Whether looking for DIMMs or SODIMMs, it is important to understand how they work so that you can choose the right one when upgrading your personal computer.

DIMMs (and likewise SODIMMs) are dramatic improvements over their predecessors, SIMMs. SIMMs have identical contacts on each side of the circuit board. DIMMs, on the other hand, have different contacts on each side of the circuit board, effectively doubling the throughput rate.

Installing SODIMMs

SODIMMs, like DIMMs, are placed into specific sockets on the computer's motherboard. Every motherboard is slightly different, but generally speaking, DIMMs are placed into their sockets upright and SODIMMs are placed laying down flat. Some latch into place with metal clips while others are held in place by friction alone. Check your computer manual for more exact installation instructions.

SODIMMs are significantly smaller than full-sized DIMM modules, but they are still a tremendous improvement over SIMMs. Currently, DIMMs and SODIMMs are the industry standard. This may one day change. Newer standards such as the RIMM standard operate at even faster speeds than most DIMMs and SODIMMs, but unless their prices come down, DIMMs and SODIMMs will remain on top.