RDRAM

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RDRAM

[¦är¦dē′ram]

RDRAM

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 It was superseded by Rambus' XDR memory (see XDR).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.
References in periodicals archive ?
a Sanmina-SCI Company (Nasdaq NM: SANM) and designer and manufacturer of memory modules, today announced an arrangement with Elpida Memory for the long-term supply of Direct Rambus DRAM.
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.
This will be leveraged from our high performance technology being used to design and produce our Timing chips for various applications, including the world's best performing Direct Rambus Clock Generator (DRCG), the ICS9212AF-13.
The Alienware(R) Pentium(R) 4 Processor based AREA-51(TM) system will enable the use of 32 nanosecond, 1066MHz Direct Rambus modules (RIMM modules), which achieves a peak bandwidth of up to 4.
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.
The use of Direct Rambus technology in PlayStation(R)2 was essential for its performance," said Ken Kutaragi, president and chief executive officer of Sony Computer Entertainment Inc.
The latest Pentium 4 systems using the new D850EMD2 and D850EMV2 will enable the use of 40ns, 800MHz Direct Rambus modules (RIMM modules), which achieve a peak bandwidth of up to 3.
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.
The RAPTOR is SOYO's featured Rambus memory mainboard for 2002 with its four 184-pin Direct Rambus RIMM modules, which will support up to 2GBs of memory.
Along with the testing of mainstream DRAMs and SDRAMs, the T5375 can also perform testing on such emerging technologies as DDR SDRAMs and Direct Rambus DRAMs -- memories that will continue to enjoy increasing demand.
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.