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Samsung 4GB DDR4 PC4-21300, 2666MHZ, 260 PIN SODIMM, 1.2V, CL 19 Laptop ram Memory Module

Samsung 4GB DDR4 PC4-21300, 2666MHZ, 260 PIN SODIMM, 1.2V, CL 19 Laptop ram Memory Module

Bottom line: The Samsung 4GB DDR4 PC4-21300 ($35.33 on Amazon as of 2026-10-06): Samsung-fabricated DRAM dies, the same part class notebook OEMs install at the factory; main trade-off: 4GB alone is thin; most current workloads want 8GB or more in total.

$35.33

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Buy on Amazon — $35.33 Compare to similar memory & ram

By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ Samsung-fabricated DRAM dies, the same part class notebook OEMs install at the factory
  • ✓ JEDEC 2666MHz CL19 at 1.2V trains automatically, no XMP or BIOS tuning
  • ✓ Standard 260-pin SODIMM footprint fits most DDR4-era laptops and mini PCs
  • ✓ Explicit part number M471A5244CB0-CTD makes matching an existing stick simple

Cons

  • ✗ 4GB alone is thin; most current workloads want 8GB or more in total
  • ✗ CL19 latency is looser than the CL16 modules sold at the same 2666MHz speed
  • ✗ Ships as a single module, so dual channel requires buying a second stick
  • ✗ 2666MHz leaves no headroom on platforms that support 3200MHz DDR4

Manufacturer description

Samsung's M471A5244CB0-CTD is a 4GB DDR4 SODIMM built for laptops, mini PCs, and small-form-factor systems that use the 260-pin standard. It runs at 2666MHz (PC4-21300) with CL19 timings on a 1.2V rail, the JEDEC-standard voltage for DDR4 laptop memory, so it drops into a compatible slot and trains at rated speed without BIOS tuning or an XMP profile. Because Samsung fabricates its own DRAM dies, this module is the same class of part many notebook OEMs install at the factory, which matters when you are adding a second stick and want the pairing to behave predictably. A single 4GB module fits…

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SpecPicks Verdict

SpecPicks scored Samsung 4GB DDR4 PC4-21300 using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. Compare with similarly-priced alternatives in the memory & ram category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this Samsung module work in my laptop?

It fits any system that accepts a 260-pin DDR4 SODIMM at 2666MHz (PC4-21300) running on 1.2V. Check your laptop's service manual for DDR4 SODIMM support first, as DDR3 notebooks use a different notch position and desktop DIMM slots use 288 pins.

Can I mix this with the memory already installed?

In most cases yes. DDR4 SODIMMs of different capacities will run together, but the pair falls back to the slower module's speed and looser timings. Matching this exact part, M471A5244CB0-CTD, avoids that downclock.

What speed and timings does it run at?

2666MHz, PC4-21300, with CL19 latency at 1.2V. Those are JEDEC default values, so the module posts at full rated speed without an XMP profile or manual timing entry.

Is 4GB enough memory for my system?

On its own, 4GB is tight for a modern browser and office workload. This module makes more sense as the second stick in a 4GB laptop, taking it to 8GB in dual channel, or as a replacement for a failed module.

Is it new, and what warranty does it carry?

Samsung DRAM modules are typically sold with a manufacturer warranty, but condition (new, OEM tray, or renewed) and warranty terms vary by seller. Check the product listing for the current condition and warranty details before ordering.

Key Features

  • M471A5244CB0-CTD

Full Specifications

BrandSamsung
Voltage1.2 volts
RAM Size4 GB
Model NameM471
Form FactorSO-DIMM
Memory Speed2400 MHz
Model NumberM471A5244CB0-CTD
Number of Pins260
Mfr Part NumberM471A5244CB0-CTD
Memory GenerationDDR4
Compatible DevicesLaptop
Data Transfer Rate2133 MHz
Memory Form FactorSODIMM
Additional FeaturesLightweight
Computer Memory Size4 GB
RAM Memory TechnologyDDR4
Column Address Strobe Latency19

Ready to buy?

Samsung 4GB DDR4 PC4-21300, 2666MHZ, 260 PIN SODIMM, 1.2V, CL 19 Laptop ram Memory Module is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

Buy on Amazon — $35.33

*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.

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Samsung 4GB DDR4 PC4-21300, 2666MHZ, 260 PIN SODIMM, 1.2V, CL 19 Laptop ram Memory Module
$35.33
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