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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM256645300SO 2GB DDR2 667MHz SODIMM Lenovo Thinkpad R61E memory upgrade

SKU CH-W3SG-AJ327

A 2GB DDR2 667MHz SODIMM module built for Lenovo ThinkPad R61E notebooks

  • Capacity2GB
  • Type200-Pin DDR2 SO-DIMM
  • SpeedDDR2 667 (PC2 5300)
  • CAS LatencyCL5
  • Timing5-5-5
  • Voltage1.8V
  • Designed for Lenovo ThinkPad R61E notebooks
  • 2 GB DDR2 667 MHz module expands system memory
  • 200-pin SODIMM form factor fits laptop slots
  • CL5 5-5-5 timing at 1.8 V for stable operation
  • Unbuffered non-ECC design with major-brand chipset

Compatible Lenovo ThinkPad R61E Upgrade

This 2GB DDR2 SO-DIMM is built for the Lenovo ThinkPad R61E notebook series. It installs directly into the 200-pin memory slot and runs at 667MHz with 1.8V power. The unbuffered, non-ECC design matches the factory specification for a straightforward capacity increase.

Owners of Listed ThinkPad Models

The module is validated for ThinkPad R60I models 7649-xxx, 7650-xxx and 7657-xxx, which support a maximum of 4GB across two sockets. Laptops that require ECC registered memory or a different pin count will not accept this stick. Buyers whose systems need higher density per slot should look at alternative configurations.

Single 2GB DDR2 667MHz Module

The decisive specification is the 2GB capacity in a single 2Rx8 rank operating at PC2-5300 speed with CL5 timing. This exact combination determines whether the notebook recognises the full amount and remains stable. Confirm the target machine uses 200-pin DDR2 SO-DIMMs before ordering.

Pontos fortes

  • Designed for Lenovo ThinkPad R61E notebooks
  • 2 GB DDR2 667 MHz module expands system memory
  • 200-pin SODIMM form factor fits laptop slots
  • CL5 5-5-5 timing at 1.8 V for stable operation
  • Unbuffered non-ECC design with major-brand chipset

Especificações

BrandComputer Memory Solutions
ModelCM256645300SO
Capacity2GB
Type200-Pin DDR2 SO-DIMM
SpeedDDR2 667 (PC2 5300)
CAS LatencyCL5
Timing5-5-5
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemLenovo Thinkpad R61E Notebook Series
Package Content1 Memory RAM Stick

Perguntas sobre este artigo

Does my Lenovo ThinkPad R61E need a free 200-pin DDR2 SO-DIMM slot to install this CM256645300SO module?

Yes, the module is a 200-pin DDR2 SO-DIMM and the R61E series uses two such sockets, so one must be vacant for the upgrade.

Will this PC2-5300 667 MHz stick run stably alongside an existing PC2-4200 533 MHz module in the second slot?

The faster module will down-clock to 533 MHz to match the slower stick, allowing both to operate together at the lower speed.

How can I confirm the system recognises the full 2 GB capacity after fitting the module?

Check the BIOS memory summary or the operating system’s system-information screen; both should report the total installed RAM including the new 2 GB stick.

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