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Green circuit board with black memory chips and gold edge contacts

SK hynix

SK hynix HMA81GS6AFR8N-UH 8GB DDR4 2400MHz laptop RAM

SKU CH-2HMB-A21FB

8GB DDR4 SODIMM running at 2400MHz with CL17 latency and 1.2V operation for laptop upgrades

  • Total capacity8 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 8GB

  • 8GB capacity adds responsive multitasking headroom
  • DDR4 2400MHz speed delivers 19200 MB/s bandwidth
  • CL17 latency keeps data access snappy
  • 20V operation reduces power draw and heat
  • 260-pin SO-DIMM fits standard laptop slots

SK hynix 8GB DDR4 2400MHz SODIMM

This SK hynix module adds 8GB of DDR4 memory to a compatible laptop. It runs at 2400MHz with CL17 latency and 1.20V operation. The unbuffered, non-ECC design suits mainstream notebook upgrades.

Check 260-pin DDR4 slot and voltage

Verify the notebook accepts 260-pin DDR4 SO-DIMM modules before ordering. The system must support 1.20V operation and PC4-19200 speed for correct function. Confirm an empty slot exists or plan to replace the existing stick.

Single-rank 260-pin build quality

The single-rank PCB uses 260 gold-plated edge contacts for reliable seating in the SODIMM socket. Low-profile height fits tight chassis clearance. Standard JEDEC pinout ensures straightforward installation without adapters.

How it compares

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

Price $41.99
Cheaper than about 64% of the 2,079 comparable items (median $70.99).
Total capacity 8 GB
Lower than about 60% of the 1,886 comparable items (median 16 GB).
Price per GB $5.25 per GB
Cheaper than about 60% of the 1,886 comparable items (median $5.94 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHynix
Model nameHMA81GS6AFR8N-UH
Total capacity8 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Memory
CAS latencyCL17
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Power
Rated voltage1.2 V

Other versions of this model

1 more in the same range

Questions about this item

Does the HMA81GS6AFR8N-UH module come alone or as a kit, and is any extra hardware needed?

The listing describes a Dual Channel Kit, so two 8 GB modules are included. No extra brackets, cables or heat spreaders are required for a standard 260-pin SODIMM slot.

Should I pick the CL17 2400 MHz version or a different speed grade for my laptop?

Choose this CL17 2400 MHz kit when your laptop’s memory controller is rated for DDR4 2400; a higher-speed module would simply down-clock to 2400 MHz, while a lower-speed one would limit peak bandwidth.

What does the 2400 MHz rating mean once the kit is installed in a laptop?

The memory bus runs at 300 MHz clock with a 2400 MT/s data rate, delivering a PC4 19200 peak transfer rate; actual throughput depends on the CPU’s integrated memory controller and the workload’s access pattern.

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