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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions 2GB DDR3 1066 SO-DIMM for Acer Aspire One D257-13404

SKU CH-04H4-RWD7B

2GB DDR3 1066 SO-DIMM for Acer Aspire One D257-13404, CL7 1.5V unbuffered

  • Total capacity2 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 2GB capacity upgrades the Acer Aspire One D257-13404 to its maximum memory limit
  • DDR3 1066 speed matches the notebook's PC3 8500 specification for stable operation
  • CL7 CAS latency with 7-7-7 timing delivers responsive performance at rated frequency
  • 204-pin SO-DIMM form factor fits the single expansion socket without modification
  • 5V unbuffered design ensures compatibility with the original system voltage requirements

System-specific DDR3 SO-DIMM for Acer Aspire One

This 2 GB DDR3 1066 module is built to the exact electrical and mechanical specification of the Acer Aspire One D257-13404. It arrives as a single 204-pin SO-DIMM rated at 1.5 V with CL7 7-7-7 timings, allowing a straightforward replacement of the factory-installed stick. No configuration is required beyond inserting the module into the sole memory socket.

Ideal for owners restoring the netbook to its 2 GB

The upgrade suits anyone whose D257-13404 currently runs a single 1 GB module and needs the full 2 GB ceiling for smoother multitasking. Because the platform provides only one socket, the existing 1 GB stick must be removed; this kit does not support adding a second module alongside the original. Buyers needing ECC, registered buffering, or capacities beyond 2 GB should look at other platforms.

204-pin DDR3 1066 SO-DIMM at 1.5 V CL7

The decisive specification is the 204-pin DDR3 1066 (PC3 8500) interface with 1.5 V unbuffered operation and 1Rx8 organisation. Only modules matching this exact pin count, voltage, speed and timing will be recognised by the netbook’s memory controller. Verify the socket is free and the original 1 GB stick is removed before installation.

How it compares

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

Price $8.99
Cheaper than about 98% of the 21,161 comparable items (median $397.99).
Total capacity 2 GB
Lower than about 95% of the 20,941 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256648500SO
Total capacity2 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsAcer Aspire One D257-13404 Aod257-13404
In the box
Included items1 Memory RAM Stick

Questions about this item

What speed does the DDR3 1066 SO-DIMM run at in practice?

The module operates at 1066 MHz with PC3-8500 bandwidth and CL7 7-7-7 timings at 1.5 V.

Will this 204-pin SO-DIMM fit the Acer Aspire One D257-13404 memory slot?

Yes, the 204-pin DDR3 SO-DIMM form factor matches the single expansion socket in the D257-13404.

How do I install the 2 GB stick and what step is often missed?

Remove the existing 1 GB module from the sole socket, insert the 2 GB stick at the correct angle, then press down until the side clips lock.

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