double data rate


Also found in: Acronyms, Wikipedia.

double data rate

[¦dəb·əl ′dad·ə ‚rāt]
(computer science)
A clocking technique that increases the transfer speeds of synchronous memories by using both the leading and trailing edges of the clock signal to transfer data, effectively doubling the transfer rate or bandwidth.
References in periodicals archive ?
The market has seen the progression from double data rate (DDR) to DDR2 and now DDR3 memory modules.
The GDDR4 (Graphics Double Data Rate, version 4) high-speed graphics memory chip from Samsung Electronics Co Ltd, an advanced memory technology company, has been selected for the 1GB ATI Radeon HD 2900 XT and the 256MB ATI Radeon HD 2600 XT graphics processing cards from Advanced Micro Devices (NYSE:AMD) (AMD), a provider of processing solutions.
It also includes an AGP-4X graphics interface and a double data rate SDRAM at 400 Megatransfers/second memory interface with error correcting code as an option.
PCI-SIG(R), the industry organization chartered to develop and manage PCI, PCI-X and PCI Express(TM) industry-standard I/O technologies, has selected the new Agilent tools for testing of PCI-X 2.0 for double data rate (DDR) technologies at upcoming PCI-SIG compliance workshops.
'N1 is important for Sun to stay in the game with HP and IBM but they and everybody else will have to learn to live in a world that doesn't need as many servers.' Meanwhile, Apple has announced an upgrade of its Xserve(TM) 1U rack servers through dual 1.33 GHz PowerPC G4 processors, up to 2GB of 333 MHz Double Data Rate (DDR) memory and up to 720GB of hot-plug storage.
The new 12-inch PowerBook G4 has a 867 MHz PowerPC G4 processor with Velocity Engine and offers 256MB of fast Double Data Rate (DDR) memory (expandable to 640MB) and a fast NVIDIA GeForce4 420 Go graphics processor with 32MB of dedicated DDR RAM for incredible 3D graphics and display performance.
Despite the small chassis, the S series comes with industry-standard features, including an Intel Pentium 4 processor, Double Data Rate memory, full-height PCI slots, standard optical drives, four front-access high-speed USB 2.0 ports, and front-access audio ports.
DDR stands for 'double data rate' and doubles the rate at which information in the RAM is sent to the processor.
DDR (Double Data Rate) memory, sometimes called DDR SDRAM (Double Data Rate Synchronous Dynamic Random Access Memory) or similar names, is backed by Intel archrival Advanced Micro Devices (AMD) and other companies.
Compaq is not disclosing the value of deal; or exactly what type of chips Micron is supplying but sources say that DRAM, synchronous DRAM - including the PC133 and double data rate types - Rambus DRAM and Flash memory will all be on the menu.
Samsung Electronics Co., Ltd., the world leader in advanced memory technology, announced that it has begun mass producing the highest-capacity mobile DRAM the industrys first 12-gigabyte (GB) low-power double data rate 4X (LPDDR4X) package optimized for tomorrows premium smartphones.
Mercury Systems announced the first volume production shipment of BuiltSECURE high density double data rate fourth-generation synchronous dynamic random-access memory to a leading defense prime contractor.