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Green rectangular circuit board with black memory chips and gold edge connector

SAMSUNG

SAMSUNG M471A1K43CB1 8GB DDR4 2666 CL19 laptop RAM

SKU CH-M0SQ-E3Z5E MPN M471A1K43CB1

An 8 GB DDR4 SO-DIMM 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 / Unregistered
  • Product type260-Pin DDR4 SO-DIMM
  • 8 GB capacity for smoother multitasking
  • DDR4 2666 speed for responsive performance
  • CL19 latency for efficient data access
  • 20 V low voltage reduces power draw
  • 260-pin SO-DIMM fits standard laptop slots

8GB DDR4 2666 SO-DIMM laptop module

This Samsung M471A1K43CB1 module adds 8GB of DDR4 memory to a laptop using a 260-pin SO-DIMM slot. It runs at 2666 MT/s with CL19 latency and operates at the standard 1.20V. The stick is unbuffered and non-ECC, matching the requirements of most mainstream notebooks.

Best for simple capacity upgrades on compatible

Users who need a single 8GB stick to replace a failed module or to fill an empty slot will find this part fits the spec. Buyers whose systems require ECC error correction or registered DIMMs cannot use this module. Laptops with soldered memory and no expansion slot also cannot accept it.

DDR4 2666 CL19 at 1.20V unbuffered non-ECC

The decisive specification is the combination of DDR4 2666 speed, CL19 timing, 1.20V voltage, and unbuffered non-ECC architecture. If the laptop’s memory controller expects these exact parameters, the module will work; if the platform demands ECC, registered buffering, a different voltage, or a different DDR generation, it will not.

How it compares

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

Price $51.99
Cheaper than about 58% 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 $6.50 per GB
Pricier than about 56% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameSAMSUNG
Model nameM471A1K43CB1-CTD
Total capacity8 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
ECC supportNo
Buffer typeUnbuffered / Unregistered
Power
Rated voltage1.2 V

Questions about this item

How do I install the 260-pin DDR4 SO-DIMM module and what step is often missed?

Align the notch with the slot key, insert at an angle, then press down firmly until both side clips click. The step often missed is pressing evenly on both ends so both clips engage fully.

Will the 8GB DDR4 2666 CL19 module need any firmware updates or component replacement over time?

No firmware updates apply to this memory module. It has no moving parts or batteries, so no scheduled replacement is required under normal operation.

What limit appears first during sustained heavy workloads on this 1.20V CL19 kit?

The CAS latency of 19 cycles at 2666 MT/s sets the response-time floor, so latency-bound workloads hit that timing ceiling before bandwidth saturates.

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