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Green 288-pin DDR4 UDIMM module, 16GB ECC unbuffered, black chips on both sides

A-Tech

A-Tech 16GB DDR4 2133MHz ECC UDIMM 2Rx8 CL15 1.2V Server Memory

SKU CH-A418-YM78V

16 GB DDR4 ECC unbuffered DIMM running at 2133 MHz with CL15 latency and 1.2 V operation

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 16GB DDR4 2133MHz ECC UDIMM for server reliability
  • CL15 latency and 1.2V operation for efficient data handling
  • 2Rx8 dual-rank design increases memory density
  • 288-pin DIMM form factor fits standard DDR4 slots
  • Tested compatible replacement for Crucial CT16G4WFD8213

16GB DDR4 ECC UDIMM for servers

This 16GB DDR4 2133MHz ECC unbuffered module is built for server and workstation systems that require error-correcting memory. It operates at a standard 1.2V with CL15 latency and a 2Rx8 rank configuration. The 288-pin DIMM form factor fits compatible DDR4 slots in enterprise platforms.

Capacity headroom at 16GB per module

A single 16GB stick provides substantial memory capacity for virtualisation, database workloads and multi-user applications. Systems with multiple DIMM slots can scale further by adding identical modules. The 2133MHz speed and PC4-17000 rating set the throughput ceiling for memory-intensive tasks on supported platforms.

Unbuffered ECC build with 288-pin layout

The module uses major-brand chips on an unbuffered DDR4 PCB with ECC circuitry for data integrity. Its 288-pin edge connector ensures a secure fit in standard DDR4 DIMM sockets without registration buffers. The 1.2V operation matches DDR4 specification voltage for stable, low-power performance in qualified systems.

How it compares

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

Price $110.99
Cheaper than about 65% 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 $6.94 per GB
Typical for this category: the median of 6,064 items is $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 nameCT16G4WFD8213
Total capacity16 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

Will this DDR4 2133 ECC UDIMM work in a server that currently uses DDR4 modules?

This module uses the DDR4 standard at 2133 MHz with 1.2 V operation. It will only work in systems that support DDR4 memory; it cannot be used in platforms that require a different generation.

How can I verify the 16GB CL15 ECC module is running at the correct speed after installation?

Enter the system BIOS or use an OS utility such as CPU-Z to confirm the memory reports 2133 MHz, CL15 timings and ECC active.

Does the 288-pin UDIMM ship with any extra cables or brackets, or must I buy them separately?

The box contains only the single 16GB DDR4 2133 ECC UDIMM module; no cables, brackets or additional hardware are included.

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