DIMMs were introduced to eliminate this disadvantage. The processor would then access the two SIMMs in parallel. Since Intel's Pentium, many processors have a 64-bit bus width, requiring SIMMs installed in matched pairs in order to populate the data bus. Another difference is that standard SIMMs have a 32-bit data path, while standard DIMMs have a 64-bit data path. While the contacts on SIMMs on both sides are redundant, DIMMs have separate electrical contacts on each side of the module. DIMMs began to replace SIMMs (single in-line memory modules) as the predominant type of memory module as IntelP5-based Pentium processors began to gain market share.
These modules are mounted on a printed circuit board and designed for use in personal computers, workstations and servers. Three SDRAM DIMM slots on a computer motherboardĪ DIMM or dual in-line memory module comprises a series of dynamic random-access memoryintegrated circuits.
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