Back دي دي آر 3 إس دي رام Arabic DDR3 SDRAM Catalan DDR3 SDRAM Czech DDR-SDRAM#DDR3-SDRAM German DDR3 SDRAM Spanish DDR3 SDRAM Estonian DRAM#DDR3 SDRAM Finnish DDR3 SDRAM French DDR3 SDRAM ID DDR3 Italian

DDR3 SDRAM

This article is about the computer main memory. For the graphics memory, see GDDR3. For the mobile memory, see LPDDR3. For the video game, see Dance Dance Revolution 3rdMix.
DDR3 SDRAM
Double Data Rate 3 Synchronous Dynamic Random-Access Memory
Type of RAM
4 GB PC3-12800 ECC DDR3 DIMM
DeveloperJEDEC
TypeSynchronous dynamic random-access memory (SDRAM)
Generation3rd generation
Release date2007 (2007)
Standards
  • DDR3-800 (PC3-6400)
  • DDR3-1066 (PC3-8500)
  • DDR3-1333 (PC3-10600)
  • DDR3-1600 (PC3-12800)
  • DDR3-1866 (PC3-14900)
  • DDR3-2133 (PC3-17000)
Clock rate400–1066 MHz
Voltage Reference 1.5 V
PredecessorDDR2 SDRAM (2003)
SuccessorDDR4 SDRAM (2014)

Double Data Rate 3 Synchronous Dynamic Random-Access Memory (DDR3 SDRAM) is a type of synchronous dynamic random-access memory (SDRAM) with a high bandwidth ("double data rate") interface, and has been in use since 2007. It is the higher-speed successor to DDR and DDR2 and predecessor to DDR4 synchronous dynamic random-access memory (SDRAM) chips. DDR3 SDRAM is neither forward nor backward compatible with any earlier type of random-access memory (RAM) because of different signaling voltages, timings, and other factors.

DDR3 is a DRAM interface specification. The actual DRAM arrays that store the data are similar to earlier types, with similar performance. The primary benefit of DDR3 SDRAM over its immediate predecessor DDR2 SDRAM, is its ability to transfer data at twice the rate (eight times the speed of its internal memory arrays), enabling higher bandwidth or peak data rates.

The DDR3 standard permits DRAM chip capacities of up to 8 gigabits (Gbit) (so 1 gigabyte by DRAM chip), and up to four ranks of 64 Gbit each for a total maximum of 16 gigabytes (GB) per DDR3 DIMM. Because of a hardware limitation not fixed until Ivy Bridge-E in 2013, most older Intel CPUs only support up to 4-Gbit chips for 8 GB DIMMs (Intel's Core 2 DDR3 chipsets only support up to 2 Gbit). All AMD CPUs correctly support the full specification for 16 GB DDR3 DIMMs.[1] Intel, also supports 16 GB DIMMs, from Broadwell (also named as "AMD Only memory, because of using 11-bit addressing).

  1. ^ Cutress, Ian (2014-02-11). "I'M Intelligent Memory to release 16GB Unregistered DDR3 Modules". anandtech.com. Retrieved 2015-04-20.

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