DIMMmuistimoduuleina

DIMM, or Dual In-line Memory Module, is a type of memory module used for installing random-access memory (RAM) in computers. DIMMs are characterized by having independent electrical contacts on both sides of the module's circuit board. This differs from older Single In-line Memory Modules (SIMMs), which shared a single electrical contact for both sides. The dual contacts allow DIMMs to transfer data twice per clock cycle, effectively doubling the memory bandwidth compared to SIMMs.

Modern computers primarily use DIMMs for system RAM. These modules contain integrated circuits that store data. When a computer's central processing unit (CPU) needs to access data, it requests it from the RAM. DIMMs are designed to be easily installed and removed, allowing for memory upgrades or replacements.

There are various types of DIMMs, distinguished by their generation and intended use. DDR (Double Data Rate) SDRAM (Synchronous Dynamic Random-Access Memory) is a common standard, with subsequent generations like DDR2, DDR3, DDR4, and DDR5 offering progressively higher speeds and capacities. The physical connector for each DDR generation is also slightly different, preventing incompatible modules from being installed. ECC (Error-Correcting Code) DIMMs are another variant, incorporating extra circuitry to detect and correct memory errors, commonly found in servers and workstations where data integrity is critical. The form factor of DIMMs is typically 240 pins for DDR3 and DDR4, and 288 pins for DDR5.