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Green rectangular laptop memory module with black chips and gold contacts

Patriot Memory

Patriot Memory PSD416G26662S 16GB DDR4 2666 laptop RAM

SKU CH-X9YB-71CMC MPN PSD416G26662S

16GB DDR4 2666 SO-DIMM laptop memory running at CL19 1.20V for notebook upgrades

  • Total capacity16 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL19
  • Memory timings19-19-19-43
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 16 GB capacity lets you run more applications at once
  • DDR4 2666 speed transfers data at PC4-21300 rates
  • CL19 CAS latency keeps response times tight
  • 20 V operation reduces power draw and heat
  • 260-pin SO-DIMM form factor fits standard laptop slots

16GB DDR4 2666 SO-DIMM

This 16GB DDR4 SO-DIMM runs at 2666MHz with CL19 timings for notebooks that accept 260-pin DDR4 memory. It operates at the standard 1.20V and is unbuffered non-ECC, matching the JEDEC baseline for mainstream laptop upgrades.

Practical limits of DDR4 2666

The module follows the PC4-21300 standard, so its maximum transfer rate is fixed at 2666 MT/s and latency at 19-19-19-43. Systems that only support lower DDR4 speeds will downclock the stick, while platforms needing higher bandwidth or lower latency cannot be satisfied by this specification.

Installation and common issues

The 260-pin SO-DIMM inserts directly into the laptop slot with a keyed notch, requiring no driver or BIOS configuration for basic operation. Problems usually appear when the firmware lacks a matching JEDEC profile, when mixing with modules of different speeds or timings, or when the chassis only provides a single memory slot.

How it compares

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

Price $43.99
Cheaper than about 62% of the 2,079 comparable items (median $70.99).
Total capacity 16 GB
Typical for this category: the median of 1,886 items is 16 GB.
Price per GB $2.75 per GB
Cheaper than about 92% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand namePatriot
Product lineSignature Line
Model namePSD416G26662S
Total capacity16 GB
Product type260-Pin DDR4 SO-DIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL19
Memory timings19-19-19-43
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.2 V
Size & build
Shipping weight0.02 kg
Package size147 × 51 × 17 mm

Questions about this item

Should I choose this 16GB module or add a second stick for dual-channel performance?

This single 16GB module runs at 2666MHz with CL19 timings; adding an identical stick enables dual-channel bandwidth on compatible laptops.

What does the 2666MHz speed rating mean for actual laptop performance?

The module transfers data at 2666 MT/s (PC4-21300) with 19-19-19-43 latency at 1.20V, boosting responsiveness in multitasking and demanding apps.

Does the 260-pin DDR4 SO-DIMM interface limit the maximum speed or capacity I can install?

The 260-pin DDR4 SO-DIMM form factor supports this 16GB capacity at 2666MHz (PC4-21300) with CL19 timing at standard 1.20V operation.

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