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Green printed circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 16GB DDR4 2666 ECC UDIMM 2Rx8 Server RAM

SKU CH-JCK3-QXA6B

16 GB DDR4 2666 ECC UDIMM module with CL19 latency, 1.20 V operation and 2Rx8 rank for server upgrades

  • Capacity16GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • 16 GB DDR4 2666 ECC UDIMM for server workloads
  • CL19 latency at 1.2 V for stable operation
  • 2Rx8 dual-rank organisation increases memory density
  • 288-pin DIMM fits standard DDR4 server slots
  • Tested replacement for Hynix HMA82GU7DJR8N-VK

16 GB DDR4 ECC UDIMM for servers

This 16 GB DDR4 2666 module adds error-correcting capacity to compatible server and workstation boards. It runs at CL19 latency and 1.20 V, matching standard DDR4 voltage. The unbuffered design suits platforms that accept UDIMM memory.

288-pin DIMM fits standard DDR4 slots

The single-rank 2Rx8 module installs in any DDR4 UDIMM slot without registered-buffer overhead. It frees registered DIMM slots for other configurations and keeps the memory bus unbuffered for lower latency. Verify your system supports unbuffered ECC before ordering.

Low-voltage operation limits heat and noise

At 1.20 V the module draws minimal power, reducing thermal load inside dense chassis. Passive cooling from case airflow is typically sufficient, keeping acoustic impact negligible during sustained workloads.

Highlights

  • 16 GB DDR4 2666 ECC UDIMM for server workloads
  • CL19 latency at 1.2 V for stable operation
  • 2Rx8 dual-rank organisation increases memory density
  • 288-pin DIMM fits standard DDR4 server slots
  • Tested replacement for Hynix HMA82GU7DJR8N-VK

Specifications

BrandA-Tech
SeriesCompatible Replacement for Hynix
ModelHMA82GU7DJR8N-VK
Capacity16GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
FeaturesHMA82GU7DJR8N-VK

Questions about this item

Does the CL19 latency become a bottleneck when the module runs at 2666 MHz for long periods?

CL19 is the rated timing at 2666 MHz; sustained workloads stay within this specification.

How much heat does the 1.20 V unbuffered DIMM produce during all-day server operation?

Standard DDR4 1.20 V unbuffered modules run cool enough for typical server chassis airflow.

Which motherboard slot and chipset support are required for this 288-pin 2Rx8 ECC UDIMM?

A DDR4 288-pin UDIMM slot with ECC support in the chipset is needed.

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