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Green rectangular DDR4 DIMM with black chips and gold contacts

A-Tech

A-Tech 16GB DDR4 2666MHz ECC RDIMM 2Rx4 Server Memory

SKU CH-0BS2-MZT3G

16 GB DDR4 2666 MHz ECC registered DIMM with CL19 latency and 1.2 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 16GB DDR4 2666MHz ECC RDIMM boosts server workloads
  • CL19 1.20V registered design keeps data accurate
  • 2Rx4 288-pin layout fits compatible DDR4 slots
  • Major-brand chipset tested for dependable operation
  • Direct replacement for Crucial CT16G4RFD4266 module

16GB DDR4 2666MHz ECC RDIMM Server Module

This 16GB DDR4 2666MHz ECC RDIMM module provides registered, error-correcting memory for server and workstation platforms. It operates at PC4-21300 speed with a CL19 latency and a standard 1.20V voltage. The dual-rank 2Rx4 organisation uses major-brand chipsets to deliver dependable capacity for multi-tasking and heavy workloads.

Check DIMM slots and registered memory support

Verify that your system accepts 288-pin DDR4 RDIMMs and supports registered ECC operation before ordering. The module requires a platform designed for server-class memory; consumer desktop boards typically cannot use registered DIMMs. Confirm the maximum supported speed and total capacity per channel in your hardware documentation to ensure compatibility.

Registered design with 288-pin DDR4 interface

The registered buffer reduces electrical load on the memory controller, helping stability in dense configurations. A 288-pin DDR4 edge connector ensures correct keying for server DIMM slots. All units undergo quality assurance testing for reliable daily operation in demanding environments.

How it compares

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

Price $109.99
Cheaper than about 66% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $6.87 per GB
Cheaper than about 54% of the 6,064 comparable items (median $7.25 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 Crucial
Model nameCT16G4RFD4266
Total capacity16 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.2 V

Questions about this item

Does the 288-pin DDR4 DIMM ship as a single 16 GB stick or do I need to buy anything else?

The module arrives as one 16 GB stick; no extra parts are required for installation.

Why choose the 2Rx4 ECC RDIMM version over other DDR4 options?

The 2Rx4 registered ECC design targets server and workstation boards that require error correction and signal buffering.

What does the 2666 MHz PC4-21300 rating mean once the stick is installed?

It sets the maximum data rate at 2666 MT/s with CL19 latency at the standard 1.20 V DDR4 voltage.

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