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Green circuit board with black memory chips and gold edge connectors

SK hynix

SK hynix HMAA4GS6MJR8N-VK 32GB DDR4 2666 CL19 260-pin laptop RAM

SKU CH-X66H-Z36QC MPN HMAA4GS6MJR8N-VK

32 GB DDR4 laptop memory running at 2666 MT/s with CL19 latency and 1.2 V operation

  • Total capacity32 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • Product type260-Pin DDR4 SO-DIMM
  • High 32 GB capacity for demanding multitasking
  • DDR4 2666 speed for responsive system performance
  • Low 1.20 V voltage reduces power draw
  • CL19 latency supports quick data access
  • 260-pin SO-DIMM fits standard laptop slots

32 GB DDR4 SO-DIMM for laptop upgrades

This single module delivers 32 GB of DDR4 memory in the standard 260-pin SO-DIMM form factor. It is built for notebooks that accept unbuffered, non-ECC DDR4 and need a straightforward capacity increase.

Speed and latency: DDR4 2666 CL19

The module runs at DDR4 2666 with a CAS latency of CL19 (PC4-21300). If your laptop requires a different speed grade or tighter timings, this stick will not match the specification.

Tool-free slot installation

Insert the module at the usual angle until the side clips click; no screws or thermal pads are involved. The most common issue is a BIOS that does not recognise the full 32 GB density, so verify the maximum supported capacity per slot before buying.

How it compares

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

Price $140.99
Pricier than about 69% of the 2,079 comparable items (median $70.99).
Total capacity 32 GB
Higher than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $4.41 per GB
Cheaper than about 77% 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 nameSK hynix
Product lineSODIMM Laptop Memory
Model nameHMAA4GS6MJR8N-VK
Total capacity32 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V

Questions about this item

What does the 2666 speed rating mean once the module is installed in a laptop?

The module runs at DDR4-2666 with CL19 latency at 1.20V; the laptop's memory controller determines the final operating speed.

What does the PC4-21300 designation cap in practice?

PC4-21300 is the JEDEC label for DDR4-2666; the laptop's BIOS and chipset set the actual data rate.

What does the 260-pin SO-DIMM form factor need to fit in a laptop?

A standard DDR4 SO-DIMM slot with 260 contacts; the module is unbuffered and non-ECC.

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