What is the form factor for a memory module that is commonly used in laptops?

A memory module commonly used in laptops is the SODIMM. This form factor is specifically designed to meet the size constraints of portable devices, which tend to have less space than standard desktop systems. SODIMMs are shorter and narrower than their DIMM counterparts, making them ideal for the compact nature of laptops.

SODIMMs typically have 72-pin and 200-pin configurations for older DDR memory types and 204-pin configurations for DDR2, DDR3, and DDR4 memory. This specialized design allows for efficient use of space while providing the necessary memory performance for the tasks that laptops are often required to handle.

In contrast, DIMMs, which are used in desktop computers, are larger and cannot fit into the limited space available in laptops. RDRAM and SDRAM refer to types of memory technology rather than the physical form factor, which is what differentiates SODIMM in this context. Thus, SODIMM is the best choice for laptop memory modules.