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ThinkStation D20 PC3-8500 1066MHz DDR3 ECC RDIMM Memory - Overview
Features and specifications

The ThinkStation D20 PC3-8500 1066MHz DDR3 ECC RDIMM memory offerings let you upgrade standard system memory capacity to improve overall system performance. Features and benefits include:

  • Choice of available memory sizes for DDR3 RDIMM memory
  • Test-proven 100% compatibility on listed ThinkStation systems
  • Meets stringent ThinkStation reliability standards for memory products
  • Lenovo Limited Warranty
  • Authenticity seal on every memory module


  • 1GB PC3-8500 1066MHz DDR3 1RX8 RDIMM Memory (43R2034)
  • 2GB PC3-8500 1066MHz DDR3 2RX8 RDIMM Memory (43R2035)
  • 4GB PC3-8500 1066MHz DDR3 2RX4 RDIMM Memory (43R2036)
  • 8GB PC3-8500 1066MHz DDR3 4RX4 RDIMM Memory (43R2037)

Performance specifications:

  • DDR3 offers data transfer rates up to 1600 Mbps
  • Lower power consumption of 1.5 volts instead of of 1.8 volts by DDR2 memory
  • Higher bandwidth by the 8-bit pre-fetch buffer
  • Buffer address, control and clock signals reduce system loading
  • 240-pin JEDEC/EIA standard RDIMM interface
  • Gold-plated leads

Physical specifications:

  • Approximate height: 8 mm (0.3 in)
  • Approximate width : 134 mm (5.3 in)
  • Approximate depth : 30 mm (1.2 in)
  • Approximate weight: 0.1 kg (0.2 lb)

Operating environment:

  • Temperature: 0 deg to 55 deg C (32 deg to 131 deg F)
  • Relative humidity: 10% to 90%



3 year - Customer Replacement Unit (CRU) Service

  • Announce date: 21 Apr 2009 (Worldwide)
  • Availability date: 24 Apr 2009 (Worldwide)
  • Effective withdrawal date: October 2010


Hardware compatibility
Machine Type - Models
ThinkStation D20


  • ThinkStation D20 has 12 DIMM slots supporting 96 GB of memory.
    • The slots are divided into two sets of 6-DIMM slots.
  • ThinkStation D20 supports UDIMM and RDIMM memory. For information on UDIMM, go to:
  • Mixing of UDIMM and RDIMM is not supported.
  • When using four or more 8GB RDIMM modules, per processor, ThinkStation D20 operates at DDR3-800 memory speed.
  • When using seven or more modules, ThinkStation D20 requires a second processor
  • .
  • 4GB, 8 GB modules include a memory fan cooler.
    • A memory fan cooler is required when a 4 GB or 8 GB module is installed.
    • ThinkStation D20 supports up to two installed memory coolers, one per 6-DIMM slot memory bank.
  • Memory module (1 GB, 2 GB, 4GB, or 8 GB)
  • Memory Fan Cooler (for 4GB and 8GB modules)
  • Memory Fan Cooler Setup Poster (for 4GB and 8GB modules)
  • Publication


Additional product information
Service parts - Part number listing for your product
Lenovo Support: Workstation Accessories - Reference Guide list - A list of other ThinkStation workstation accessories.
Personal Systems Reference (PSREF) - Comprehensive information on the features and technical specifications of Lenovo products.

If you are unable to find what you are looking for, please do try the following options:
1. Lenovo Assisted Search
2. Product usage and general troubleshooting tips
3. Lenovo Support Forum
4. Technical Support Call Centre

Document ID : PD001609
Legacy Document ID : MIGR-72845
Last Updated :
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