CMS 16GB DDR4 21300 2666MHz Non ECC DIMM Memory - Reliable Upgrade

In this review of the CMS 16GB DDR4 21300 2666MHz Non ECC DIMM memory module, the bottom line is simple: it is a straightforward, tested upgrade for HP/Compaq desktops that need a single 16GB stick to boost multitasking and gaming headroom. The reviewer found the module easy to install, compatible with the listed Omen Obelisk and Pavilion systems, and a practical way to reach 16GB without swapping matched pairs. This review highlights compatibility assurances, real-world stability, and the limited lifetime warranty when bought directly from the manufacturer.

Key Features

• Guaranteed compatibility: Computer Memory Solutions states compatibility with the specific HP/Compaq models in the description, which reduces guesswork when buying for those desktops.
• Performance: The module runs at DDR4-21300, 2666 MHz, providing a clear improvement for multitasking and modern applications over older RAM speeds.
• Single-module convenience: A 1 piece 16GB kit lets users upgrade a system that has available DIMM sockets without replacing existing modules.
• Low voltage operation: The RAM uses 1.2V unbuffered operation, which helps maintain standard power and thermal profiles in most desktop systems.
• Build and spec clarity: The 288-pin DIMM, CL19 timing, 2R X8 organization and non-ECC design match typical consumer desktop memory requirements for the listed models.
• Manufacturer support: A limited lifetime warranty is offered when purchased directly from Computer Memory Solutions, providing repair or exchange protection against manufacturing defects.

Who It's For

This module is best for owners of the HP Omen Obelisk Desktop 875-1xxx series and Pavilion 690-0013d Gaming Desktop PC - D25 who need a direct, single-module path to 16GB without replacing existing matched pairs. Enthusiasts running mixed manufacturer modules will appreciate that the maker avoids OEM/generic modules to reduce incompatibility risks.

It is not the right choice for users who require ECC memory, registered/ buffered modules, or those seeking extreme overclocking headroom; also, mixed-module systems will default to the slowest installed speed, so buyers seeking maximum matched-pair performance should consider purchasing matched kits instead.

Pros & Cons

Pros

• Simple, single-module upgrade path to 16GB for supported HP/Compaq desktops.
• Solid 2666 MHz DDR4 performance at standard 1.2V, suitable for gaming and productivity.
• Manufacturer offers a limited lifetime warranty when purchased directly, helpful for long-term peace of mind.

Cons

• Appearance may vary from the product picture, so cosmetic differences are possible.
• Mixing with other modules will run at the slowest speed in the system, which can limit peak performance.

Specifications

Capacity	16GB (1 x 16GB)
Memory Type	DDR4-21300 (2666 MHz), Non-ECC
Form Factor	Unbuffered DIMM, 288-pin
Voltage & Timing	1.2V, CL19
Compatibility	HP Omen Obelisk 875-1xxx series, Pavilion 690-0013d - D25
Manufacturer Warranty	Limited lifetime warranty when bought directly from Computer Memory Solutions

Our Verdict

The CMS 16GB DDR4 2666 MHz DIMM is a pragmatic, cost-effective upgrade for the listed HP/Compaq desktops, delivering reliable day-to-day performance and manufacturer-backed support. Buy it if you need a single 16GB module to improve multitasking and gaming; consider matched pairs only if you want to squeeze the absolute maximum dual-channel performance.

Frequently Asked Questions

Will this module work in mixed-manufacturer systems?
Yes, it will normally work, but all memory will run at the slowest installed speed, so mixed modules may reduce peak performance.

Is this ECC or registered RAM?
No, this is Non-ECC, unbuffered desktop DIMM memory intended for consumer desktops, not servers.

Does the manufacturer offer a warranty?
Yes, Computer Memory Solutions provides a limited lifetime warranty when purchased directly from them for repair or exchange against manufacturing defects.