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64MB 800MHz ECC 4D RDRAM RIMM Memory - Overview

At a glance


  • Guaranteed compatibility on IntelliStation M Pro platforms
  • Meets or exceeds reliability standards for memory products
  • Fast access time -- synchronous to the RDRAM channel's clock
  • 184-pin RIMM with gold-plated leads
  • Improve the performance of your IntelliStation M Pro systems with ECC 800 MHz RAMBUS) DRAM RIMM memory upgrades. These RIMM offerings let you upgrade standard system memory. RDRAM enables faster performance than either fast page mode (FPM) or hyper-page mode (EDO) or the more recent synchronous DRAM (SDRAM) mode memory. To optimize the performance of the RDRAM technology, each channel is limited to 32 devices. The number of devices in each RIMM is indicated with a number followed by the character "D." The RDRAM signal channel is a high-quality terminated transmission line as contrasted with memory buses used in previous technologies. Memory sockets that are not occupied with RIMMs must be populated with jumper cards in order for the signals in the channel to be properly terminated.


3 year Limited customer carry-in exchange


Seven-language, multicolored unit pack.. This generic carton is customized with a product-specific label containing the logo and sealed with a tamper-evident security seal.
  • 64 MB 800 MHz ECC 4D RDRAM RIMM
  • Publication
Product Marketing and FRU Part Number(s)
Part numbers applicable to: World Wide
  • Marketing part number: 20L0274
  • FRU part number: 20L0284
Product Dates
World Wide
  • Announce Date: 25 Oct 1999
  • Planned Availability Date: 14 Dec 1999
  • Withdrawal Date: 29 Mar 2002
Technical Specifications
Performance Specifications as known at time of announcement
  • 800 MHz RDRAM
  • ECC function organized as 8Mx72
  • Serial presence detect/decode
  • 184-pin, 1-mm pin spacing
  • 2.5 Volt supply
  • Gold-plated contacts
  • RIMM built with 4 RDRAMs using Chip Scale Package (CSP) with metal covers to protect the RDRAM devices and act as a heat sink
Physical, Environmental, and Compatibility Specifications as known at time of announcement

  • * lbs
  • * kg
  • 5.25 inches
  • 133.35 mm
  • 0.2 inches
  • 5.0 mm
  • 1.375 inches
  • 34.93 mm
Operating Temperature
  • between 10 degrees Celcius and 35 degrees Celcius
  • between 50 degrees Farenheit and 95 degrees Farenheit
Hardware Requirements

The 64MB 800MHz ECC 4D RDRAM RIMM is supported on the following systems:
  • IntelliStation M Pro - 6868 (PC 800-compatible models)
Hardware Requirements for other systems

The 64MB 800MHz ECC 4D RDRAM RIMM is supported on systems that support industry standard RDRAM to the PC 800 memory module specification.

  • System board memory sockets must be populated with jumper boards if a RIMM is not present for the signals on the memory channel to be properly terminated.
  • Caution: Exceeding a total of 32D, more likely on systems with three RIMM sockets, may not operate or may produce unpredictable result

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Document ID : PD000789
Legacy Document ID : MIGR-4ECSWX
Last Updated :
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