Ram Ddr2 Dans Slot Ddr3

DDR3 is not backward compatible with DDR2 and DDR. DDR3 has 1.5V power, DDR2 needs 1.8V and DDR needs 2.5V power. In terms of standard motherboard slots also the notch or the key for different memory modules is at different place for the three type of memory thus preventing any accidental insertion in memory slots which can damage the memory and or the motherboard. Sep 27, 2019  Harus diingat DDR1 SDRAM tidak serasi dengan modul RAM DDR2, DDR3 dan DDR4. Dalam erti kata lain, DDR2, DDR3 dan DDR4 tidak akan berfungsi dengan papan induk yang dilengkapi dengan DDR1 dan begitulah sebaliknya. Tidak ada perbezaan seni bina di antara DDR SDRAM yang direka untuk frekuensi jam yang berbeza. Double Data Rate RAM was capable of two data transfers per clock cycle, giving it twice can ddr3 ram be used in ddr2 slots the theoretical peak bandwidth of previous SDRAM while running at the same clock speed.The RAM found in most modern desktop and laptop computers is DDR3 RAM (DDR3 is short for Double Data Rate roulette complete maximum bets Type 3). DDR3 RAM replaces the 2x clock multiplier with a 4x clock multiplier, thus running at 4 times the memory transfer rate for the same bus speed as the original DDR RAM. Additionally, DDR2 is capable of running at a lower voltage than DDR, and DDR3 is again capable of running at a lower voltage than DDR2. 1) Yes, DDR3 has the same number of pins as DDR2. 2) No, DDR3 has a different key notch location. DDR2 sticks won't ever go into DDR3 slots and vice versa. Mobo manufacturers will probably have DDR2 and DDR3 versions of boards.

A 200-pin PC2-5300 DDR2 SO-DIMM
A 204-pin PC3-10600 DDR3 SO-DIMM
A comparison between 200-pin DDR and DDR2 SDRAM SO-DIMMs, and a 204-pin DDR3 SO-DIMM module[1]
A SO-DIMM slot on a computer motherboard

A SO-DIMM, SODIMM, or small outline dual in-line memory module, is a type of computer memory built using integrated circuits. SO-DIMMs are a smaller alternative to a DIMM, being roughly half the size of regular DIMMs.

SO-DIMMs are often used in systems that have limited space, which include laptops, notebooks, small-footprint personal computers such as those based on Mini-ITXmotherboards, high-end upgradable office printers, and networking hardware such as routers and NAS devices.[2]

  • 1Visual identification

Visual identification[edit]

Most types of SO-DIMMs can be recognized visually by the distinctive notches that “key” them for different applications:[1]

  • 100-pin SO-DIMMs (SDR SDRAM) have two notches.[3]
  • 144-pin SO-DIMMs (SDR SDRAM) have a single notch near the center.[4]
  • 200-pin SO-DIMMs (DDR SDRAM or DDR2 SDRAM) have a single notch nearer to one side.[5] The exact location of this notch varies (read below).
  • 204-pin SO-DIMMs (DDR3 SDRAM) have a single notch closer to the center than on 200-pin SO-DIMMs.[6]
  • 260-pin SO-DIMMs (DDR4 SDRAM), 69.6 mm (2.74 inches) wide and 30 mm (1.2 inches) high, making them 2 mm (0.079 inches) wider than DDR3 SO-DIMMs, with a single notch after pin 144.[7]
  • 260-pin SO-DIMMs (UniDIMM), 69.6 mm (2.74 inches) wide and 30 mm (1.2 inches) or 20 mm (0.79 inches) high, with a single notch placed differently than on DDR3 SO-DIMMs.[8][9]

Variants of 200-pin SO-DIMMs[edit]

The 200-pin SO-DIMM can be of the types DDR and DDR2. In both cases the notch is located at one fifth of the board length (20 pins + notch + 80 pins), but in DDR2 the notch is located slightly closer to the center of the board. These two types of memory are not interchangeable. The different notch locations are designed to prevent cross-installation, aiding at the same time in visually identifying 200-pin SO-DIMM modules.[1]

This variance is designed to prevent coupling of memory and controllers of different DDR generations due to electrical incompatibility. DDR SO-DIMMs operate at 2.5 V while DDR2 SO-DIMMs operate at 1.8 V.[10]

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Variants of DDR3 SO-DIMMs[edit]

These modules, while using the same physical layout, may differ in the specified voltage - 1.5 or 1.35 volts. The lower voltage modules are sometimes, but not always, identified as DDR3L - see also DDR3 SDRAM.

General characteristics[edit]

Ddr2 Vs Ddr3 Memory

200-pin and 204-pin SO-DIMMs are 67.6 mm (2.66 inches) long, 31.75 mm (1.250 inches) wide, having a maximum total depth of 3.8 mm (0.15 inches).[11]

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SO-DIMMs are nearly equal in power and voltage rating to DIMMs; SO-DIMM technology does not mean lower performance compared to larger DIMMs. For example, DDR3 SO-DIMMs provide clock speeds such as 533 MHz (1066 MT/s, PC3-8500), CAS latencies such as 7, and higher capacities such as 4 GB per module.[12]

DDR2 SO-DIMM memory modules commonly have clock speeds from 200 MHz upward (specifications). 204-pin SO-DIMMs can also contain DDR3 SDRAM, with specifications such as PC3-6400, PC3-8500, PC3-10600, PC3-14900 and PC3-17000.[13] 260-pin UniDIMMs contain DDR3 or DDR4 SDRAM depending on configuration. Some SO-DIMMs provide ECC functionality; unbuffered ECC SO-DIMMs are called SO-CDIMMs.[14]

Ddr ddr2 ddr3 difference

See also[edit]

  • Dual in-line package (DIP)
  • Memory geometry – logical configuration of RAM modules (channels, ranks, banks, etc.)
  • Rambus in-line memory module (RIMM)
  • Single in-line memory module (SIMM)
  • Single in-line package (SIP)
  • Zig-zag in-line package (ZIP)

References[edit]

  1. ^ abc'Are DDR, DDR2 and DDR3 SO-DIMM memory modules interchangeable?'. acer.custhelp.com. Retrieved 2015-06-26.
  2. ^Synology Inc. 'Synology RAM Module'. synology.com.
  3. ^'RAMCHECK 100-Pin DDR Adapter, a tool for testing and identifying JEDEC-compliant 100-pin DDR SO-DIMM modules'. memorytesters.com. 2013. Retrieved 2015-06-26.
  4. ^'Small-outline SDRAM module (MT16LSDF3264(L)H 256 MB and MT16LSDF6464(L)H 512 MB) Datasheet'(PDF). Micron Technology. 2006-05-03. p. 22. Retrieved 2015-06-26.
  5. ^'DDR DIMM & SODIMM Modules (184-pin DDR DIMM, 100-pin DDR DIMM, and 200-pin DDR SO-DIMM modules)'(PDF). smartm.com. 2011. p. 4. Retrieved 2015-06-26.
  6. ^'NT2GC64B(C)H4B0PS / NT4GC64B(C)88B0(1)NS / NT8GC64B(C)8HB0NS PC3(L)-10600 / PC3(L)-12800 Unbuffered DDR3 SO-DIMM'(PDF). nanya.com. December 2012. p. 23. Retrieved 2015-06-26.
  7. ^'DDR4 SDRAM SO-DIMM (MTA18ASF1G72HZ, 8 GB) Datasheet'(PDF). Micron Technology. 2014-09-10. p. 18. Archived from the original(PDF) on 2014-11-29. Retrieved 2015-06-26.
  8. ^Geof Findley; Becky Loop (2014-09-16). 'DDR4: The Right Memory for Your Next Server and High-End Desktop System'(PDF). intel.activeevents.com. Intel. p. 28. Archived from the original(PDF) on 2014-12-17. Retrieved 2015-06-26.
  9. ^'How Intel Plans to Transition Between DDR3 and DDR4 for the Mainstream'. techpowerup.com. 2014-09-14. Retrieved 2015-06-26.
  10. ^'DRAM – Can I mix DDR, DDR2 and DDR3 modules-my PC?'. integralmemory.com. Retrieved 2015-06-26.
  11. ^micron.com - 200 Pin, PC2700 DDR SDRAM Unbuffered SO–DIMM REFERENCE DESIGN SPECIFICATIONArchived 2010-09-23 at the Wayback Machine page 26
  12. ^'Corsair Memory — 4GB DDR3 SODIMM Memory (CM3X4GSD1066)'. corsair.com. Retrieved 1 October 2015.
  13. ^'204-Pin DDR3 SDRAM Unbuffered SODIMM Design Specification'.
  14. ^'Define-SO-CDIMM'. RAMpedia. Retrieved 2014-08-24.

External links[edit]

Wikimedia Commons has media related to SO-DIMM.

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