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Green rectangular circuit board with gold edge connectors and black memory chips

A-Tech

A-Tech 4GB DDR3 1066MHz PC3-8500 CL3 1.5V 204-Pin SO-DIMM laptop RAM

SKU CH-KATC-4QDT0

4GB DDR3 1066MHz CL3 laptop SO-DIMM running at 1.5V for Corsair CMSA8GX3M2A1066C7 systems

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL3
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Recommended forCompatible Replacement for Corsair CMSA8GX3M2A1066C7
  • 4GB capacity adds multitasking headroom for everyday workloads
  • DDR3 1066MHz speed matches PC3-8500 system requirements
  • CL3 latency delivers responsive memory access timing
  • 5V standard voltage ensures broad laptop compatibility
  • 204-pin SO-DIMM form factor fits standard DDR3 notebook slots

4GB DDR3 1066MHz SO-DIMM for laptops

This 4GB DDR3 SO-DIMM module runs at 1066MHz with CL3 latency and 1.5V operation. It is built as a compatible replacement for the Corsair CMSA8GX3M2A1066C7 part. The unbuffered, non-ECC design targets laptops, notebooks and all-in-one systems that accept 204-pin DDR3 memory.

DDR3 1066MHz interface limits

The DDR3 1066 standard caps bandwidth at the PC3-8500 rate, so throughput cannot exceed what the memory controller and bus allow at this frequency. CL3 timing is fixed by the module and cannot be tightened without stability risk. Systems requiring ECC, registered modules or voltages other than 1.5V will not accept this stick.

Single 4GB module capacity

A single 4GB stick adds modest headroom for everyday multitasking and typical office workloads on supported platforms. Memory-intensive tasks such as virtualisation, large media editing or modern gaming will exhaust the available capacity quickly. Buyers needing more than 4GB total must populate additional slots with compatible modules.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 93% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $3.50 per GB
Cheaper than about 87% of the 1,886 comparable items (median $5.94 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 nameA-Tech
Product lineCompatible Replacement for Corsair
Model nameCMSA8GX3M2A1066C7
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL3
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Recommended forCompatible Replacement for Corsair CMSA8GX3M2A1066C7

Questions about this item

Is this single 4 GB module the right choice if my laptop has two SO-DIMM slots and I want 8 GB total?

Yes, this is a single 4 GB DDR3 SO-DIMM; adding a second identical module will give 8 GB in dual-channel mode if your platform supports it.

What does the PC3-8500 rating mean for actual throughput in my laptop?

PC3-8500 is the JEDEC designation for DDR3 1066 MHz operation, so the module runs at that data rate once installed.

Will the 204-pin DDR3 SO-DIMM interface work in any notebook that takes DDR3 memory?

The module uses the standard 204-pin DDR3 SO-DIMM form factor and 1.5 V voltage required by DDR3 laptop slots.

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