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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions 4GB DDR3 1066 SODIMM A34

SKU CH-3RN8-PQS7K

A 4 GB DDR3 SODIMM running at 1066 MHz for compatible Acer Aspire laptops

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB capacity expands Acer Aspire system memory
  • DDR3 1066 MHz speed matches PC3-8500 standard
  • CL7 timing with 7-7-7 latency supports responsive operation
  • 204-pin SODIMM form factor fits compatible laptop slots
  • 5V unbuffered design works with existing memory configuration

System-specific DDR3 upgrade

This 4 GB SODIMM module is built for Acer Aspire 5742G and 5745 notebooks. It targets owners of those models who need a straightforward memory replacement or expansion without compatibility guesswork. The stick is validated for the listed part numbers and installs in a standard 204-pin slot.

Capacity and headroom

The kit supplies a single 4 GB rank in a two-slot chassis that supports up to 8 GB total. One module fills half the maximum, leaving the second slot open for a matching stick if more capacity is required later. Workloads that exceed 4 GB will page to storage until a second module is added.

DDR3 1066 interface limits

The module runs at DDR3 1066 (PC3 8500) with CL7 timing at 1.5 V. Bandwidth and latency are fixed by that standard, so performance cannot scale beyond the memory controller’s native ceiling. Systems already populated with slower DDR3 will down-clock to the lowest common speed.

How it compares

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

Price $20.99
Cheaper than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.25 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512648500SODRH
Total capacity4 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsAcer Aspire As5742G-6480, As5742G-6426, As5745-6492
In the box
Included items1 Memory RAM Stick

Questions about this item

Will this 204-pin DDR3 1066 module work in the second slot of my Acer Aspire 5742G alongside the original memory?

Yes, the laptop has two SODIMM slots and supports up to 8 GB total, so this 4 GB stick can be added to the existing module.

How can I verify the CL7 timing and 1.5 V voltage are active after installation?

Open CPU-Z or the BIOS memory tab; the SPD and real-time tabs will show DDR3-1066, 7-7-7 timings and 1.5 V.

Does the package include only the memory stick or are tools and a thermal pad supplied?

The box contains one 4 GB SODIMM stick; no tools, heat spreader or thermal pad are included.

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