RDRAM

(redirected from Direct Rambus)

RDRAM

[¦är¦dē′ram]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

RDRAM

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RDRAM

(Rambus DRAM) Pronounced "r-d-ram." A dynamic RAM chip technology from Rambus, Inc., Los Altos, CA (www.rambus.com). Rambus licensed its memory designs to semiconductor companies, which manufactured the chips. Starting in the mid-1990s, RDRAM was used in video games and Windows PCs and competed with DDR SDRAM. Intel was an early champion of RDRAM but began to phase out support in 2001.

RDRAM came in 16-bit (single channel) and 32-bit (dual channel) modules with clock rates from 266 to 800 MHz. It was superseded by Rambus' XDR memory (see XDR).

Metal-Covered Modules
The Direct RDRAM chips used in computers were housed in Rambus Inline Memory Modules (RIMMs) with metal covers. RIMMs used different pin settings and were not interchangeable with DIMMs and SDRAM. See dynamic RAM, SLDRAM and memory modules.


RIMMs and DIMMs
RDRAM memory for computers was easily identifiable by its metal cover that served as a heat sink.



RIMMs and DIMMs
RDRAM memory for computers was easily identifiable by its metal cover that served as a heat sink.
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References in periodicals archive ?
Samsung Electronics says that it has become the first company to complete development of a 288Mb Direct Rambus DRAM (RDRAM) component and a 576Mb Rambus In-line Memory Module (RIMM module).
Major Japanese semiconductor makers NEC Corp and Toshiba Corp are following the lead of Korea's Samsung Electronics (CI No 3,760) and immediately suspending production of Direct Rambus DRAMs in reaction to Intel's postponement of the launch of its new 820 chipset.
Direct Rambus technology is an extension of today's RDRAMs.
Designed to link direct Rambus memory chips with a microprocessor, the Camino had been seen as the critical last link needed to deploy RDRAM-based PCs and numerous OEM makers and motherboard manufacturers had geared up for the launch.
Using a benchmark called Office Bench; Dell's engineers contrasted a BX chipset platform using 100MHz SDRAM against a Camino platform with 800MHz Direct Rambus. Other than the DRAM and chipset, both systems were configured identically with 500MHz processors.
Samsung Electronics Co has announced plans to start mass production of direct Rambus DRAM chips, which offer twice the data transmission speed of conventional memory chips.
Intel's preferred next-generation memory standard is Direct Rambus DRAM.
Intel has committed instead to ship Direct Rambus memory as an upgrade to its current PC-100 DRAMs.
Via is working on a chipset that will support PC-133 SDRAM memory, which it and others have positioned as an "evolutionary alternative" to Intel's proposed support for Direct Rambus memory.