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Two green SO-DIMM sticks with black chips no heat spreader

SK hynix

SK hynix 8GB (2x4GB) DDR4 3200 SO-DIMM CL22 HMA851S6DJR6N-XN

SKU CH-EP0K-KRYYB

Dual-channel 8 GB kit of two 4 GB DDR4 SO-DIMMs running at 3200 MT/s with CL22 latency

  • Capacity8GB (2 x 4GB)
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 3200 (PC4 25600)
  • CAS LatencyCL22
  • Voltage1.20V
  • ECCNo
  • Dual-channel kit doubles bandwidth with two matched 4 GB modules
  • DDR4 3200 speed rated at PC4-25600 for fast data transfer
  • Low 1.20 V operation reduces power draw and heat
  • CL22 latency timing for responsive system performance
  • 260-pin SO-DIMM form factor fits standard laptop memory slots

8 GB dual-channel laptop kit

This kit provides 8 GB of DDR4 memory in two 4 GB SO-DIMM modules for notebooks that accept 260-pin DDR4. It targets users upgrading or repairing a laptop that requires unbuffered, non-ECC memory at the standard 1.20 V.

DDR4 3200 speed ceiling

The modules run at DDR4 3200 with a CL22 latency and PC4-25600 bandwidth. System firmware or processor limits may clock the kit lower, and the fixed timing cannot be tightened without stability testing that the kit does not guarantee.

CL22 latency at 3200 MT/s

The CAS latency of 22 cycles at the rated 3200 MT/s data rate is the specification that determines whether the kit meets a platform's timing requirements. Buyers needing lower latency or higher frequency should look for modules with different timing ratings.

商品特色

  • Dual-channel kit doubles bandwidth with two matched 4 GB modules
  • DDR4 3200 speed rated at PC4-25600 for fast data transfer
  • Low 1.20 V operation reduces power draw and heat
  • CL22 latency timing for responsive system performance
  • 260-pin SO-DIMM form factor fits standard laptop memory slots

商品規格

BrandSK Hynix
SeriesSO-DIMM
ModelHMA851S6DJR6N-XN
Capacity8GB (2 x 4GB)
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 3200 (PC4 25600)
CAS LatencyCL22
Voltage1.20V
ECCNo
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
Heat SpreaderNo

商品問答

Should I pick a single 8 GB module or this 2 × 4 GB kit for my laptop?

The dual-channel kit uses two 4 GB SO-DIMMs so the memory controller can read and write to both modules at once, giving higher bandwidth than a single 8 GB stick.

Will the 3200 MT/s rating actually run at that speed in my machine?

The modules are rated for DDR4 3200 (PC4-25600) but will operate at the highest speed your laptop’s memory controller and BIOS allow, which may be lower.

Does the 260-pin DDR4 SO-DIMM interface limit the maximum transfer rate?

The 260-pin SO-DIMM form factor carries the DDR4 3200 signal; the practical ceiling is set by the platform’s memory controller, not the connector itself.

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