DDR3 SDRAM
alt: Three short green circuit boards, identical in size, but each with a notch in a different location
image: Laptop SODIMM DDR Memory Comparison V2.svg
wiki page edit link: http://en.wikipedia.org/w/index.php?title=DDR3_SDRAM&action=edit
type: Synchronous dynamic random-access memory
wiki page length: 27700
wiki page revision ID: 781999705
type: InformationAppliance
direction: vertical
predecessor: DDR2 SDRAM
comment: Double data rate type three SDRAM (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.
caption: 4
header: Physical comparison of DDR, DDR2, and DDR3 SDRAM
wiki page out degree: 87
alt: Three long green circuit boards, identical in size, but each with a notch in a different location
type: Thing
caption: Desktop PCs
caption: Notebook and convertible PCs
subject: Category:SDRAM
successor: DDR4 SDRAM
type: Device
wiki page modified: 2017-05-24T11:22:10Z
wiki page history link: http://en.wikipedia.org/w/index.php?title=DDR3_SDRAM&action=history
image: Desktop DDR Memory Comparison.svg
wiki page revision link: http://en.wikipedia.org/w/index.php?title=DDR3_SDRAM&oldid=781999705
abstract: Double data rate type three SDRAM (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. With two transfers per cycle of a quadrupled clock signal, a 64-bit wide DDR3 module may achieve a transfer rate (in megabytes per second, MB/s) of up to 64 times the memory clock speed (in MHz). With data being transferred 64 bits at a time per memory module, DDR3 SDRAM gives a transfer rate of (memory clock rate) × 4 (for bus clock multiplier) × 2 (for data rate) × 64 (number of bits transferred) / 8 (number of bits/byte). Thus with a memory clock frequency of 100 MHz, DDR3 SDRAM gives a maximum transfer rate of 6400 MB/s.The DDR3 standard permits DRAM chip capacities of up to 8 gibibits, and up to 4 ranks of 64 bits each for a total maximum of 16 GiB 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 gibibit chips for 8 GiB DIMMs (Intel's Core 2 DDR3 chipsets only support up to 2 gibibits). All AMD CPUs correctly support the full spec for 16GiB DDR3 DIMMs.
wiki page ID: 2572735
type: Q1067263

DDR3 SDRAM
type: Document
primary topic: DDR3 SDRAM
language: en
contributor: Denniss

Denniss
contributor ID: 133598