What is the difference between dimm simm and rimm for memory

It is similar to a DIMM package but uses different pin settings. Rambus trademarked the term RIMM as an entire word. It is the term used for a module using Rambus technology. It is sometimes incorrectly used as an acronym for Rambus Inline Memory Module.

Unlike most other computer memory, computers that support RIMM require a continuous signal. If a memory socket is left empty, the computer will not work properly. A DIMM or dual in-line memory module comprises a series of dynamic random-access memory integrated circuits. These modules are mounted on a printed circuit board and designed for use in personal computers , workstations and servers. Since Intel 's Pentium many processors have a bit bus width, requiring SIMMs installed in matched pairs in order to populate the data bus.

The processor would then access the two SIMMs in parallel. DIMMs were introduced to eliminate this practice. On the bottom edge of pin DIMMs there are 2 notches, and the location of each notch determines a particular feature of the module - The first notch is DRAM key position. It represents RFU reserved future use , registered, and unbuffered in that.

The second notch is voltage key position. It represents 5. The upper DIMM in the topmost photo is an unbuffered 3. The primary difference between these two types of modules is in the number of pins that they have. This might not seem likely at first since it is clearly visible that they have the same number of pins at each side, but closer inspection reveals that the connectors on either side are connected to each other in SIMMs.

This is not the case with DIMMs. The very apparent advantage of this is the much wider bus that a DIMM can utilize. DIMMs have a 64bit compared to the 32bit bus used by SIMMSs Wider bus means more data can pass through and this correlates to a faster overall performance since memory is essential in all computer operations.

The trick is to use two SIMMs in tandem, the resulting bus would be the sum of the two buses. The appearance of DIMMs have totally made this practice unnecessary. Explain the difference between single-sided and double-sided.

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Thread starter bosssy Start date Jan 31, Forums Hardware Memory. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.

Previous Next Sort by votes. Jan 30, 14 0 0. Darkbreeze Retired Mod. Jun 24, 69, 4, , 8, DIMMs are modern memory modules. Dual inline memory module.

Rambus is something of a running joke as a failure with the PC tech industry. The company that made it is also currently listed as a scam company and is widely considered to be a laughing stock. Depending on who you ask. For example, if the motherboard has two slots each for channel A and channel B, numbered 0 and 1, fill the slots for channel A slot 0 and channel B slot 0 first. Now, logic would suggest that those with two sticks of RAM to install should put them in slots 1 and 3.

But listening to logic is silly when building a PC, because most motherboards will probably tell you you need to put them in slots 2 and 4 instead. DIMMs are used in desktop computers and servers. Skip to content Common questions.