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Green rectangular DDR4 module with gold edge contacts and black memory chips on both sides

SK hynix

SK hynix HMA81GU6JJR8N-VK 8GB DDR4 2666 desktop RAM

SKU CH-WSNB-0CF8X MPN HMA81GU6JJR8N-VK

An 8 GB DDR4 desktop module running at 2666 MT/s with CL19 latency and 1.20 V operation

  • Capacity8GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • 8 GB capacity supports everyday multitasking with a single module
  • 2666 MT/s data rate keeps desktop workflows responsive
  • CL19 latency delivers predictable timing for standard workloads
  • 20 V operation reduces power draw and heat
  • 288-pin unbuffered DIMM fits standard desktop slots

8GB DDR4 2666 Desktop Module

This single SK hynix module delivers 8GB of DDR4 memory rated at 2666 MT/s with a CL19 latency. It operates at the standard 1.20V and uses an unbuffered, non-ECC 288-pin DIMM layout. The PC4-21300 bandwidth suits everyday desktop workloads.

Suits mainstream PC builds and basic upgrades

The 8GB capacity fits general office work, web browsing and light multitasking on a budget. Builders who need more memory for content creation, heavy virtualization or modern gaming should look at larger kits or higher-capacity modules instead.

DDR4 2666 speed grade

The module runs at 2666 MT/s (PC4-21300), which determines whether the memory matches your platform's supported data rate. Verify that your motherboard and CPU officially support this speed before purchase.

Highlights

  • 8 GB capacity supports everyday multitasking with a single module
  • 2666 MT/s data rate keeps desktop workflows responsive
  • CL19 latency delivers predictable timing for standard workloads
  • 20 V operation reduces power draw and heat
  • 288-pin unbuffered DIMM fits standard desktop slots

Specifications

BrandHYNIX
SeriesDesktop Memory
ModelHMA81GU6JJR8N-VK
Capacity8GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered

Questions about this item

Do I need a motherboard with 288-pin DDR4 slots to install this HMA81GU6JJR8N-VK module?

Yes, the module uses the standard 288-pin DDR4 form factor and requires a desktop motherboard with matching DDR4 DIMM slots.

Will this CL19 2666 MHz stick run stably alongside older DDR4 modules rated at lower speeds?

The system will downclock all modules to the speed of the slowest installed stick, so mixing with slower DDR4 works but overall bandwidth drops to that lower rate.

How can I confirm the module is operating at its rated 2666 MT/s and CL19 timings after installation?

Check the memory tab in CPU-Z or enter the UEFI/BIOS; both will report the current data rate and CAS latency for each installed DIMM.

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