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Green DDR4 server DIMM with black chips, no heat spreader

SK hynix

SK hynix HMA82GR7AFR8N-VK 16 GB DDR4 2666 CL19 2Rx8 ECC Load Reduced server RAM

SKU CH-D4ZG-DG63D

16 GB DDR4-2666 CL19 ECC load-reduced DIMM for registered server platforms

  • Capacity16GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCECC Chipkill
  • 16 GB DDR4 2666 capacity supports demanding server workloads
  • ECC Chipkill protection detects and corrects multi-bit memory errors
  • Load Reduced registered design lowers electrical load on the memory bus
  • 20 V operation reduces power draw in dense configurations
  • 288-pin DIMM form factor fits standard DDR4 server slots

16 GB DDR4 Load-Reduced ECC module

This 16 GB DDR4 module runs at 2666 MT/s with CL19 latency and 1.20 V operation. It uses a 2Rx8 load-reduced registered design with Chipkill ECC for error correction. The 288-pin DIMM is sold as a single stick from a quad-channel kit. It suits servers that require registered memory with reduced electrical load.

Load-reduced registered DDR4 constraints

Load-reduced DIMMs buffer both address and data lines, lowering the electrical load on the memory controller compared with standard registered modules. The DDR4 2666 interface caps bandwidth at the PC4-21300 rate, so throughput cannot exceed that ceiling. Mixing load-reduced sticks with standard registered or unbuffered DIMMs is not supported by the memory controller. Chipkill ECC corrects multi-bit errors but adds latency versus non-ECC memory.

Single-stick installation notes

Install the 288-pin module into a DDR4 RDIMM/LRDIMM slot aligned with the key notch; the load-reduced design does not change the physical insertion force. Systems must be configured for load-reduced memory in the BIOS or the module will not train at 2666 MT/s. A common issue is populating slots in the wrong order for quad-channel operation, which forces the controller to fall back to single-channel mode. Another issue is leaving ECC scrubbing disabled, so corrected errors are not logged.

Highlights

  • 16 GB DDR4 2666 capacity supports demanding server workloads
  • ECC Chipkill protection detects and corrects multi-bit memory errors
  • Load Reduced registered design lowers electrical load on the memory bus
  • 20 V operation reduces power draw in dense configurations
  • 288-pin DIMM form factor fits standard DDR4 server slots

Specifications

BrandHynix
ModelHMA82GR7AFR8N-VK
Capacity16GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCECC Chipkill
Buffered/RegisteredLoad Reduced
Rank2RX8
Multi-channel KitQuad Channel Kit
ChipsetMajor Brand Chipset
Heat SpreaderNo

Questions about this item

Should I pick the 16 GB 2Rx8 load-reduced module or a smaller single-rank stick?

The 16 GB 2Rx8 load-reduced design lets a server populate many slots without overloading the memory controller, so choose it when you need maximum capacity per channel.

What does the 2666 MT/s rating deliver inside a server?

The DDR4 2666 speed provides 21300 MB/s peak bandwidth per module, giving each core steady throughput for virtualisation and database workloads.

How does the load-reduced DDR4 288-pin interface affect real-world limits?

Load-reduced buffering reduces electrical load on the bus, allowing higher total system memory than standard registered DIMMs while keeping the same 1.20 V operation.

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