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

SK hynix

SK hynix HMA82GR7CJR8N-VK 16GB DDR4-2666 CL15 ECC Reg server RAM

SKU CH-4WYV-91J0H

16 GB DDR4-2666 registered ECC DIMM with CL15 latency for servers and workstations

  • Capacity16GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL15
  • ECCYes
  • Buffered/RegisteredRegistered
  • 16 GB capacity supports demanding server workloads
  • DDR4 2666 speed delivers 21300 MT/s data rate
  • CL15 latency reduces access delay for responsive operation
  • Registered ECC design detects and corrects memory errors
  • Dual rank organisation increases memory density per module

16 GB DDR4-2666 registered ECC module

This 16 GB DDR4-2666 registered ECC DIMM is built for servers and workstations that require error-correcting memory. The dual-rank organisation and CL15 latency support high-density configurations in multi-socket platforms. It fits 288-pin DDR4 slots in qualified enterprise systems.

Low-voltage DDR4 operation reduces heat

The module runs at the standard DDR4-2666 data rate with a CL15 timing profile. Registered buffering lightens the electrical load on the memory controller, helping to keep thermals and power draw stable under sustained workloads. No extra cooling beyond normal chassis airflow is required.

Fits 288-pin DDR4 registered channels

Install into motherboards that support registered DDR4 DIMMs and ECC functionality. The dual-rank design increases capacity per channel without adding modules. Systems needing non-ECC or unbuffered memory cannot use this part.

Highlights

  • 16 GB capacity supports demanding server workloads
  • DDR4 2666 speed delivers 21300 MT/s data rate
  • CL15 latency reduces access delay for responsive operation
  • Registered ECC design detects and corrects memory errors
  • Dual rank organisation increases memory density per module

Specifications

BrandHynix
Part NumberHMA82GR7CJR8N-VK
Capacity16GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL15
ECCYes
Buffered/RegisteredRegistered

Questions about this item

How do I install the 288-pin DDR4 module and which notch orientation do people get wrong?

Align the single off-centre notch on the gold edge with the slot key, press straight down until both retention clips click, and verify the registered buffer seats fully — forcing it backwards bends pins.

What maintenance or replacement will the dual-rank ECC registered DIMM need later?

No routine maintenance is required; if a correctable error count climbs in the server logs, replace the module — otherwise it runs for the system lifetime.

What limit appears first under sustained load with CL15 timing at 2666 MT/s?

The CAS 15 latency ceiling is reached before bandwidth saturates, so latency-sensitive workloads hit the timing wall first.

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