DIMMs are available in four main types. The left key (indicated as "DATUM A" in Figure 6.13) is fixed in position, but the center key can be in three different positions spaced 1mm or 2mm to the right, indicating different types of RIMMs. Wang Laboratories developed it in 1983, and it was used on PCs throughout the 1980s and 1990s. 2. The 184-pin DDR DIMMs use a single key notch to indicate voltage, as shown in Figure 6.12. 3. and updated on July 27, 2011, Difference Between Similar Terms and Objects, Difference Between Sony Cybershot S Series and W Series, Difference Between Samsung Galaxy S3 and iPhone 5, Difference Between Samsung Galaxy S2 (Galaxy S II) and Galaxy S 4G, Difference Between Crossover Cable and Ethernet Cable, Difference Between Parallel Port and Serial Port, Difference Between Ultrabook and Notebook, Difference Between Microcomputer and Supercomputer, Difference Between Super Retina and Liquid Retina, Difference Between Vitamin D and Vitamin D3, Difference Between LCD and LED Televisions, Difference Between Mark Zuckerberg and Bill Gates, Difference Between Civil War and Revolution. Esto puede parecer poco probable al principio, ya que es claramente visible que tienen la misma cantidad de pines en cada lado, pero una inspección más cercana revela que los conectores de cada lado están conectados entre sí en los SIMM. Presence detect performs the same function for 72-pin SIMMs that the serial presence detect (SPD) chip does for DIMMs. This might make them more usable in a future system that could require the faster speed. If a system requires a specific speed memory module, you can almost always substitute faster speeds if the one specified is not available. All DIMMs are either 64 bits (non-ECC/parity) or 72 bits (data plus parity or error-correcting code [ECC]) wide. If the memory runs dual- or tri-channel, a virtual bank is formed that is two or three times the absolute data bus width of the processor. SIMMs, for example, are available in two main physical types—30-pin (8 bits plus an option for 1 additional parity bit) and 72-pin (32 bits plus an option for 4 additional parity bits)—with various capacities and other specifications. The standard 16/18-bit RIMM has 184 pins, one notch on either side, and two notches centrally located in the contact area. DIMMs eliminated the practice of pairing two SIMMs Muita gente posta tópicos do tipo queria saber se meu PC usa memórias DDR ou DIMM... Na verdade estão fazendo confusão... Na verdade, DIMM significa dual inline memory module. In Desktop-PCs werden standardmäßig gewöhnliche DIMM-Module verwendet. There is confusion among users and even in the industry regarding the terms single-sided and double-sided with respect to memory modules. All these memory modules are fairly compact considering the amount of memory they hold and are available in several capacities and speeds. DIMM provides the storage 32 MB to 1 GB. A diferença crucial entre SIMM e DIMM é que no SIMM de cada vez é possível conectar um dos dois lados, enquanto o DIMM possui pinos de sinal diferentes em ambos os … The 16/18-bit RIMMs are keyed with two notches in the center. DifferenceBetween.net. DIMMs provide a 64 bitchannel which is twice of the 32bit channel of SIMMs 3. The connector key is offset with respect to the center of the DIMM to prevent inserting it backward in the socket. Los chasis de escritorio se han convertido en verdaderas obras de arte, con cristal, metal, iluminación, etc. This prevents inserting a DIMM of the wrong type into a given socket. Unfortunately, unlike the film industry, not everybody in the computer industry follows established standards. Although very few (if any) of these systems are still in service, keep this information in mind if you are moving 72-pin modules from one system to another or are installing salvaged memory into a system. 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