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Green rectangular DDR4 DIMM with black chips and gold edge connector

A-Tech

A-Tech 16GB DDR4 2666 ECC RDIMM 1Rx4 Server RAM

SKU CH-0REM-3RR94

16 GB DDR4 2666 MHz ECC registered DIMM, 1Rx4, CL19, 1.2 V, compatible with Crucial CT16G4VFS4266

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 16 GB capacity expands server memory for larger workloads
  • DDR4 2666 MHz speed delivers fast data throughput
  • ECC RDIMM registered design corrects errors for reliability
  • 1Rx4 single-rank layout optimises signal integrity
  • 2 V standard voltage reduces power consumption

Server RAM for ECC workloads

This 16GB DDR4 2666 ECC RDIMM module is built for servers and workstations that require error-correcting registered memory. It runs at 1.2V with CL19 latency and a 1Rx4 rank configuration. The 288-pin DIMM fits standard DDR4 slots in compatible enterprise platforms.

Replaces non-ECC or lower-capacity sticks

The module serves as a direct compatible replacement for Crucial CT16G4VFS4266 memory. The jump is worth it when your system demands registered ECC buffers for data integrity and you need to move beyond unbuffered consumer DIMMs or smaller 8GB modules.

16GB capacity with single-rank headroom

The 16GB density handles typical virtualization hosts, database nodes and multi-user application servers without filling every slot. Headroom narrows when workloads exceed per-channel capacity limits or when the platform requires dual-rank or higher-density modules for maximum throughput.

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).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Crucial
Model nameCT16G4VFS4266
Total capacity16 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

Does this DDR4 module use a 288-pin DIMM form factor?

Yes, it is a 288-pin DDR4 DIMM designed for server and workstation motherboards that accept registered memory.

How do I install this registered ECC module correctly?

Align the notch on the 288-pin edge connector with the slot key, press firmly until the retention clips click, and ensure the motherboard supports registered ECC RDIMMs.

Will the 1.20V voltage require any future adjustment or replacement?

No, 1.20V is the standard DDR4 operating voltage; the module runs at this level for its lifetime with no user maintenance needed.

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