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Green rectangular desktop RAM module with black memory chips and gold edge connectors

SK hynix

SK hynix HMA81GU6JJR8N-VK 8GB DDR4 2666 PC4 21300 2Rx8 288-pin desktop RAM

SKU CH-3KY7-F3P69 MPN HMA81GU6JJR8N-VK

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

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 8 GB capacity for everyday multitasking
  • DDR4 2666 speed for responsive system performance
  • CL19 latency for efficient data access
  • 20 V operation reduces power draw
  • 288-pin unbuffered design fits standard desktop slots

Module Capacity and Use

This single 8GB DDR4 module runs at 2666 MT/s with a CL19 latency and 1.20V operating voltage. It is an unbuffered, non-ECC DIMM built for standard desktop platforms that accept 288-pin memory. The 2Rx8 organisation suits general computing workloads and everyday multitasking.

Thermals and Power

Operating at the standard 1.20V keeps power draw low and heat output modest during typical desktop use. The module uses no active cooling, so it adds no fan noise to the system. Thermal performance will follow the airflow provided by the case and CPU cooler.

What the Package Changes

The package contains one 288-pin DIMM and no additional accessories or software. Installing this module adds 8GB of DDR4 capacity to a compatible motherboard with an available slot. No configuration utilities or driver discs are included or required.

How it compares

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

Price $45.99
Cheaper than about 68% of the 3,647 comparable items (median $90.99).
Total capacity 8 GB
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $5.75 per GB
Cheaper than about 62% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameHynix
Product lineDesktop Memory
Model nameHMA81GU6JJR8N-VK
Total capacity8 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V

Questions about this item

How do I install this 288-pin DDR4 module, and which orientation mistake should I avoid?

Align the notch on the module with the key in the motherboard slot, press straight down until both retention clips click, and do not force it backwards — the 288-pin key prevents reverse insertion.

What maintenance or replacement will this 8GB DDR4 2666 stick need later?

No routine maintenance is required; keep the contacts clean and replace the module only if memory errors appear or capacity becomes insufficient.

What limit appears first when this CL19 1.20V module runs sustained workloads?

The CL19 latency at 2666 MT/s sets the throughput ceiling before voltage or thermal limits become a factor.

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