A DIMM (Dual In-Line Memory Module) is a popular type of memory module used in computers. It is a printed circuit board with one or both sides (front and back) holding DRAM chips and pins. The vast majority of DIMMs are … 展开

There are numerous DIMM variants, employing different pin-counts:
DIMM 100-pin: printer SDRAM and printer ROM (e.g., PostScript) 168-pin: SDR SDRAM sometimes used for FPM/EDO DRAM in workstations/servers, may be 3.3 or 5 V 184-pin: DDR … 展开

On the bottom edge of 168-pin DIMMs there are two notches, and the location of each notch determines a particular feature of the module. The first notch is the DRAM key position, which represents RFU (reserved future use), registered, and unbuffered 展开

DIMMs (Dual In-line Memory Module) were a 1990s upgrade for SIMMs (Single In-line Memory Modules) as Intel P5-based Pentium processors began to gain market share. The Pentium had a … 展开

A SO-DIMM (pronounced "so-dimm" /ˈsoʊdɪm/, also spelled "SODIMM") or small outline DIMM, is a smaller alternative to a DIMM, being roughly half the physical size of a … 展开

DDR, DDR2, DDR3, DDR4 and DDR5 all have different pin counts and/or different notch positions, and none of them are forward compatible 展开

A DIMM's capacity and other operational parameters may be identified with serial presence detect (SPD), an additional chip which contains information about the module type and timing for … 展开