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Green circuit board laptop memory module with black chips and gold contacts

Patriot Memory

Patriot Memory PSD44G266681S 4GB DDR4 2666 CL19 laptop RAM

SKU CH-JXJ6-Z5GGX MPN PSD44G266681S

4GB DDR4 2666 MHz laptop SO-DIMM with CL19 latency and 1.20V operation

  • Total capacity4 GB (1 × 4 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Product type260-Pin DDR4 SO-DIMM
  • 4GB capacity boosts multitasking headroom for everyday workloads
  • DDR4 2666 speed raises data throughput to PC4-21300
  • CL19 latency keeps response times tight for smooth operation
  • 20V low voltage reduces power draw and heat output
  • 260-pin SO-DIMM form factor fits standard laptop memory slots

4 GB DDR4 2666 CL19 SO-DIMM

This single 4 GB module runs at 2666 MHz with CL19 latency and 1.20 V operation. It uses the 260-pin DDR4 SO-DIMM form factor for laptop and small-form-factor systems. Unbuffered signal processing keeps installation straightforward.

Suited for basic capacity upgrades

The 4 GB capacity works well for replacing a failed stick or adding a modest amount of memory to a lightweight notebook. Users needing 8 GB or more for multitasking, content creation or modern gaming should look at higher-density kits instead.

DDR4 2666 speed rating

The module is specified at DDR4 2666 (PC4 21300 / PC4 21333). Verify that the target platform supports this data rate before purchase, as the stick will not negotiate speeds outside the DDR4 standard.

How it compares

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

Price $7.99
Cheaper than about 97% of the 2,079 comparable items (median $70.99).
Total capacity 4 GB (1 × 4 GB)
Lower than about 80% of the 1,886 comparable items (median 16 GB).
Price per GB $2.00 per GB
Cheaper than about 96% 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 namePatriot
Model namePSD44G266681S
Part numberPSD44G266681S
Total capacity4 GB (1 × 4 GB)
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
Power
Rated voltage1.2 V
Size & build
Shipping weight0.02 kg
Package size166 × 65 × 25 mm

Questions about this item

Should I choose the 4 GB module or look for a higher capacity?

This listing is a single 4 GB stick. If your laptop has a free slot it adds 4 GB; if the slot is occupied you would replace the existing module.

What does the 2666 MHz rating mean once the module is installed?

The module runs at 2666 MHz (PC4-21300) provided the laptop's memory controller supports that speed; otherwise it downclocks to the highest speed the platform allows.

Will the 260-pin DDR4 SO-DIMM fit my laptop's memory slot?

Yes, the 260-pin SO-DIMM form factor is the standard for DDR4 laptop memory, so it fits any notebook that accepts DDR4 SO-DIMMs.

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