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Green rectangular DDR4 DIMM module with black chips and gold contacts

A-Tech

A-Tech 4GB DDR4 2666MHz CL19 Desktop RAM

SKU CH-9XV7-ERZHY

4GB DDR4 2666MHz desktop module with CL19 latency and 1.2V operation for AMD and Intel systems

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chips
  • CAS latencyCL19
  • Tested speed2666
  • Rated voltage1.2 V
  • 4GB capacity expands multitasking headroom for everyday workloads
  • DDR4 2666 MHz speed matches PC4-21300 system requirements
  • CL19 latency at 1.20 V delivers stable standard-voltage operation
  • 288-pin unbuffered DIMM fits mainstream desktop motherboards
  • Rigorous module testing ensures reliable long-term performance

4GB DDR4 2666MHz Desktop Upgrade

This single 4GB module uses DDR4 technology at 2666MHz with CL19 timing and 1.20V operation. It is built for desktop systems that accept standard DDR4 DIMM memory and need a straightforward capacity increase.

288-Pin Unbuffered DIMM Design

The module follows the 288-pin DDR4 DIMM form factor and runs as non-ECC unbuffered memory. Installation is a direct slot-in process on compatible motherboards, and the standard voltage keeps power draw consistent with DDR4 specifications.

Tested Reliability and Support

Each unit undergoes quality assurance testing before shipping to verify dependable operation. The package includes access to United States based technical support for assistance before, during, and after installation.

How it compares

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

Price $30.99
Cheaper than about 78% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $7.75 per GB
Pricier than about 57% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity4 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chips
Memory
CAS latencyCL19
Tested speed2666
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

What speed does the DDR4 2666MHz PC4-21300 interface actually run at?

The module operates at 2666 MT/s with a PC4-21300 data rate, delivering the standard DDR4 bandwidth ceiling for this specification.

Will the 288-pin DIMM fit my motherboard's memory slots?

Yes, the 288-pin unbuffered DIMM matches the standard desktop DDR4 slot layout; verify your board supports DDR4 before installing.

How do I install the 4GB CL19 module, and what step is often missed?

Power off the system, open the case, align the notch on the 288-pin DIMM with the slot key, press firmly until both retention clips click, then confirm the BIOS recognises the new capacity.

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