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Green rectangular DDR4 DIMM with black chips and gold 288-pin edge connector

A-Tech

A-Tech 4GB DDR4 2666MHz CL19 1.2V Desktop RAM

SKU CH-46N0-TSD7F

4GB DDR4 2666MHz CL19 1.2V desktop memory module with 288-pin DIMM form factor

  • Total capacity4 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chips
  • CAS latencyCL19
  • Tested speed2666
  • Rated voltage1.2 V
  • 4GB capacity lets you run more applications at once
  • DDR4 2666 MHz speed moves data quickly through the system
  • CL19 CAS latency keeps response times tight for everyday tasks
  • 2 V operation reduces power draw and heat output
  • 288-pin DIMM fits standard desktop motherboard slots

Capacity and Compatibility

This module provides 4 GB of DDR4 memory in a single 288-pin DIMM. It is built as a direct replacement for Crucial CT4G4DFS8266 and CT2K4G4DFS8266 parts and is tested for AMD and Intel desktop platforms.

Interface Limits

The stick runs at 2666 MHz with a CAS latency of 19 at the standard 1.2 V. As an unbuffered non-ECC DIMM it follows the PC4-21300 specification and will operate at the highest common speed the motherboard and CPU memory controller allow.

Installation Notes

Align the notch with the slot key and press firmly until the retention clips click; the 288-pin layout fits standard desktop DDR4 sockets only. Common issues include mixing modules with different latencies or voltages, which can prevent the system from posting, and forgetting to seat the module fully on both ends.

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

Will this module fit a motherboard that has 288-pin DDR4 slots?

Yes, the stick is a standard 288-pin DDR4 DIMM, so it seats in any desktop board that accepts DDR4 memory.

My board runs at 2666 MHz and CL19 — is this kit a direct match?

The module is rated at 2666 MHz with CL19 timing and 1.2 V, matching those specifications exactly.

I need a single 4 GB stick to add to an existing kit — is this sold as one module?

It is supplied as a single 4 GB module, making it suitable for filling one empty slot.

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