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  2. DDR SDRAM - Wikipedia

    en.wikipedia.org/wiki/DDR_SDRAM

    None of its successors are forward or backward compatible with DDR1 SDRAM, meaning DDR2, DDR3, DDR4 and DDR5 memory modules will not work on DDR1-equipped motherboards, and vice versa. Compared to single data rate ( SDR ) SDRAM, the DDR SDRAM interface makes higher transfer rates possible through more strict control of the timing of the ...

  3. DIMM - Wikipedia

    en.wikipedia.org/wiki/DIMM

    Assorted SO-DIMM Modules A 200-pin PC2-5300 DDR2 SO-DIMM. A 204-pin PC3-10600 DDR3 SO-DIMM. A SO-DIMM slot on a computer motherboard. A SO-DIMM (pronounced "so-dim" / ˈ s oʊ d ɪ m /, also spelled SODIMM) or small outline DIMM, is a smaller alternative to a DIMM, being roughly half the physical size of a regular DIMM. The first SO-DIMMs had ...

  4. Memory module - Wikipedia

    en.wikipedia.org/wiki/Memory_module

    Two types of DIMMs (dual in-line memory modules): a 168-pin SDRAM module (top) and a 184-pin DDR SDRAM module (bottom). Memory modules of SK Hynix. In computing, a memory module or RAM stick is a printed circuit board on which memory integrated circuits are mounted.

  5. Memory geometry - Wikipedia

    en.wikipedia.org/wiki/Memory_Geometry

    Top L-R, DDR2 DIMM with heat-spreader, DDR2 DIMM without heat-spreader, SO-DIMM DDR2, DDR, SO-DIMM DDR. Memory geometry describes the logical configuration of a RAM module, but consumers will always find it easiest to grasp the physical configuration.

  6. Synchronous dynamic random-access memory - Wikipedia

    en.wikipedia.org/wiki/Synchronous_dynamic_random...

    PC133 is a computer memory standard defined by the JEDEC. PC133 refers to SDR SDRAM operating at a clock frequency of 133 MHz, on a 64-bit-wide bus, at a voltage of 3.3 V. PC133 is available in 168-pin DIMM and 144-pin SO-DIMM form factors. PC133 is the fastest and final SDR SDRAM standard ever approved by the JEDEC, and delivers a bandwidth of ...

  7. Registered memory - Wikipedia

    en.wikipedia.org/wiki/Registered_memory

    Registered (Buffered) DIMM (R-DIMM or RDIMM) modules insert a buffer between the pins of the command and address buses on the DIMM and the memory chips. A high-capacity DIMM might have numerous memory chips, each of which must receive the memory address, and their combined input capacitance limits the speed at which the memory bus can operate.

  8. File:Laptop SODIMM DDR Memory Comparison V2.svg - Wikipedia

    en.wikipedia.org/wiki/File:Laptop_SODIMM_DDR...

    SO-DIMM; Usage on de.wikipedia.org Small Outline Dual Inline Memory Module; Usage on en.wikiversity.org Computer Support/Hardware/RAM; Computer Support/Collection; Usage on es.wikipedia.org DDR SDRAM; SO-DIMM; Usage on es.wikibooks.org Mantenimiento y Montaje de Equipos Informáticos/Tema 2/La memoria R.A.M.

  9. RDRAM - Wikipedia

    en.wikipedia.org/wiki/RDRAM

    It was packaged as a 184-pin RIMM (Rambus in-line memory module) form factor, similar to a DIMM (dual in-line memory module). Data is transferred on both the rising and falling edges of the clock signal, a technique known as DDR. To emphasize the advantages of the DDR technique, this type of RAM was marketed at speeds twice the actual clock ...