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Two green DDR2 SO-DIMM sticks with black chips

Computer Memory Solutions

Computer Memory Solutions CM256645300SO 4GB (2×2GB) DDR2 667 memory upgrade

SKU CH-Q050-39THX

Two 2 GB DDR2 667 SO-DIMM modules for compatible Acer Aspire One notebooks

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 667 (PC2 5300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL5
  • Memory timings5-5-5
  • Rated voltage1.8 V
  • 4GB kit upgrades Acer Aspire One notebooks
  • DDR2 667 speed matches PC2 5300 specification
  • Two 2GB SO-DIMM modules fill both memory slots
  • 8V unbuffered non-ECC design suits laptop requirements
  • 200-pin SODIMM form factor fits compatible models

Compatible Acer Aspire One upgrade

This DDR2 SO-DIMM kit is built for Acer Aspire One Kav50, Kav60, Nav50 and Nav60 notebooks. It delivers 4GB total capacity across two 2GB modules that match the factory 200-pin layout. The unbuffered, non-ECC design installs directly into the two available sockets without configuration changes. It suits owners of these specific models who need the maximum memory their chipset accepts.

4GB kit with 3.5GB usable ceiling

Each module runs at 667 MHz with CL5 5-5-5 timing at 1.8V. The platform recognises up to 4GB installed, yet the system may report 3.5GB or less once hardware reservations are applied. A 64-bit operating system is required to address the full range. The kit fills both slots, so no further internal expansion is possible on these notebooks.

Low-voltage DDR2 thermals

Operating at the standard 1.8V for DDR2, the modules draw minimal power and produce little heat in normal use. No heat spreader is fitted, relying on the notebook’s existing airflow. The unbuffered design adds no extra electrical load, keeping acoustic impact negligible in the compact chassis.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 95% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $3.25 per GB
Cheaper than about 88% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256645300SO
Total capacity4 GB (2 × 2 GB)
Product type200-Pin DDR2 SO-DIMM
Performance
Rated speedDDR2 667 (PC2 5300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL5
Memory timings5-5-5
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsAcer Aspire One Kav50, Kav60, Nav50, Nav60 Notebooks
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the CM256645300SO DDR2 667 modules work alongside the original memory in my Acer Aspire One Kav50?

Yes, the 2Rx8 unbuffered DDR2 667 SO-DIMMs are designed for the Kav50, Kav60, Nav50 and Nav60 notebooks and will run at the system's supported speed.

How can I verify the 4GB kit is running at DDR2 667 CL5 after installation?

Check the memory tab in CPU-Z or the BIOS memory information screen; it should report 667 MHz, PC2-5300 and 5-5-5 timings at 1.8V.

Does the CM256645300SO package include anything besides the two 2GB SODIMM sticks?

The box contains only the two 200-pin DDR2 SO-DIMM modules; no tools, screws or additional cables are supplied.

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