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Green 260-pin SODIMM module with black chips

Computer Memory Solutions

Computer Memory Solutions 4GB DDR4 SODIMM 2666MHz 1Rx8 memory upgrade

SKU CH-VCAT-8A2MW

4GB DDR4 SODIMM running at 2666MHz with CL19 timings and 1.2V operation for laptop upgrades

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latency19
  • Memory timings19-19-19
  • Rated voltage1.2 V
  • 4GB DDR4 SODIMM adds responsive capacity
  • 2666 MHz speed keeps data flowing smoothly
  • CL19 timing supports stable everyday operation
  • 2 V low voltage reduces power draw
  • 260-pin unbuffered design fits compatible laptop slots

Capacity and form factor

This 4 GB DDR4 SODIMM uses the 260-pin layout and runs at 2666 MHz with CL19 timings. It is built for laptops and small-form-factor systems that accept DDR4 SO-DIMM modules. The single-rank 1Rx8 organisation keeps electrical loading low for broad platform compatibility.

Upgrade context

It replaces an existing DDR4 SODIMM of lower capacity or slower speed when the platform supports 2666 MHz operation. The jump is worthwhile when the current memory limits multitasking headroom or forces the system to use slower storage for paging. Mixing with other DDR4 modules will cause all memory to run at the slowest installed speed.

Build integration

The module operates at the standard 1.2 V and is unbuffered and non-ECC, matching typical consumer notebook requirements. A 64-bit operating system is needed to address more than 4 GB of total system memory. Installing matched pairs enables dual-channel bandwidth where the platform supports it.

How it compares

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

Price $17.99
Cheaper than about 92% 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).
CAS latency 19
Lower than about 70% of the 483 comparable items (median 22).
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
Part numberCM512642666SO
Total capacity4 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency19
Memory timings19-19-19
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Power
Rated voltage1.2 V

Questions about this item

Will this 260-pin DDR4 SODIMM fit my laptop slot?

Yes, the module uses the standard 260-pin DDR4 SODIMM form factor used by most laptops and small-form-factor PCs.

What is the correct way to seat the module so it locks in?

Insert the stick at roughly 30 degrees until the gold contacts disappear, then press down firmly until both side clips click into the notches.

When should I consider replacing this 4 GB stick?

Replace it if memory diagnostics report errors, if the system becomes unstable under load, or when you upgrade to a higher-capacity kit.

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