16GB DDR4 2666MHz SODIMM RAM Upgrade for HP Pavilion - Single Kit

In this review the focus is on a practical, single-module memory upgrade for compatible Pavilion notebooks. The CMS 16GB (1x16GB) DDR4 21300 2666MHz SODIMM is designed for users who need a straightforward memory boost without swapping matched pairs, and the bottom line is simple: it delivers a compatible 16GB increase of system RAM for supported HP/Compaq Pavilion models, offering improved multitasking and responsiveness. The reviewer found installation to be standard for SODIMM upgrades and appreciated the manufacturer's compatibility guarantee and lifetime exchange or repair warranty when purchased directly.

Key Features

• Capacity: A single 16GB module provides a sizable bump to system memory for heavier multitasking and larger applications.
• Speed: DDR4-21300 at 2666 MHz gives a reliable balance of performance and compatibility for modern laptop processors.
• Form factor: The 260-pin SODIMM fits compact notebook memory slots used in the listed Pavilion models for easy install.
• Compatibility guarantee: The manufacturer guarantees compatibility with the specified HP and Compaq Pavilion models, reducing uncertainty before purchase.
• Warranty: Lifetime exchange or repair warranty from Computer Memory Solutions covers manufacturing defects when bought direct.

Who It's For

This module is best for owners of HP/Compaq Pavilion Gaming Notebook 15-dk0xxx, 15t-dk0xxx, and Pavilion Notebook 15-cs3xxx who want to upgrade a single memory slot to 16GB without replacing existing matched kits. It suits users who run multiple browser tabs, office suites, light content creation, or casual gaming that benefits from more system RAM.

Those who need maximum dual-channel performance or plan to fully populate both memory sockets for peak throughput should consider installing matched pairs instead. Also, users running systems limited to 4GB by a 32-bit OS should upgrade the operating system to 64-bit to take full advantage of the extra memory.

Pros & Cons

Pros

• Clean compatibility promise for the listed Pavilion models reduces guesswork during upgrades.
• Single 16GB stick simplifies installation and avoids replacing existing good memory modules.
• 2666 MHz DDR4 performance at 1.2V is standard for laptop upgrades and balances speed with power efficiency.
• Lifetime exchange or repair warranty provides long-term protection against manufacturing defects.

Cons

• Running mixed modules may force all memory to the slowest installed speed, so peak dual-channel performance requires matched pairs.
• Product appearance may vary and the picture is for reference only, so aesthetics can differ from expectations.

Specifications

Capacity	16GB (1x16GB)
Memory Type	DDR4 Non-ECC SODIMM
Speed	DDR4-21300, 2666 MHz
Pins	260-pin
Voltage & Timing	1.2V, CL19
Compatibility	HP/Compaq Pavilion 15-dk0xxx, 15t-dk0xxx, 15-cs3xxx
Warranty	Lifetime exchange or repair by manufacturer

Our Verdict

The CMS 16GB DDR4 2666MHz SODIMM is a sensible, value-focused upgrade for compatible Pavilion notebooks that need more memory without a full kit replacement. It is recommended for users who prioritize a quick capacity increase and reliability backed by a manufacturer warranty, while power users seeking absolute dual-channel speed should pair it with a matched module.

Frequently Asked Questions

Will this module work with my Pavilion 15 notebook?
It is guaranteed compatible with the Pavilion Gaming Notebook 15-dk0xxx, 15t-dk0xxx, and Pavilion Notebook 15-cs3xxx models listed by the manufacturer.

Can I mix this 16GB stick with existing memory?
Yes, you can mix manufacturers, but all memory will run at the slowest installed speed and matched pairs give the best dual-channel performance.

Does this module require a specific operating system?
A 64-bit operating system is required to use more than 4GB of memory and fully benefit from the 16GB upgrade.