CMS 16GB DDR4 21300 2666MHz ECC Non Registered DIMM - Reliable Server

In this review of the CMS 16GB (1x16GB) DDR4 21300 2666MHz ECC Non Registered DIMM, the bottom line is straightforward: this module is for IT pros and small server owners who need a dependable, compatible memory upgrade for select Dell PowerEdge systems. The reviewer found it delivers stable ECC memory at the expected 2666MHz timing and is a practical way to expand server memory capacity up to the board and CPU limits. Because Computer Memory Solutions guarantees compatibility with the listed PowerEdge models, this module is an easy choice for targeted server upgrades.

Key Features

• Guaranteed compatibility: The seller guarantees compatibility with Dell PowerEdge T140, T340 and T40 models, simplifying selection for server upgrades.
• ECC non registered: Error correcting memory provides improved reliability for servers and critical workloads where data integrity matters.
• 2666MHz DDR4 speed: The DDR4-21300 2666MHz speed strikes a good balance of performance and broad processor support in many PowerEdge systems.
• 288-pin DIMM form factor: Standard 288-pin DIMM design fits desktop-class server slots used in the compatible PowerEdge machines.
• Lifetime warranty: Buying directly from the brand includes a limited lifetime warranty, offering long-term peace of mind for hardware refreshes.
• 1.2V operating voltage: The module runs at standard 1.2V DDR4 voltage, matching server memory power requirements and thermal expectations.

Who It's For

This memory module is aimed at system administrators and small business owners running Dell PowerEdge T140, PowerEdge T340 or PowerEdge T40 servers who need a straightforward 16GB ECC upgrade. It works well for database light loads, virtualization with modest VM counts, and improving multitasking or caching performance on those specific platforms.

Users with non-Dell hardware or those needing registered (RDIMM) memory, higher frequency modules, or multi-module server configurations should look elsewhere. Also, anyone who expects automatic gains beyond motherboard and CPU limits should confirm their system supports 2666MHz and ECC behavior before buying.

Pros & Cons

Pros

• Dedicated ECC support improves data integrity for server workloads.
• Guaranteed compatibility with the listed Dell PowerEdge models reduces installation uncertainty.
• Lifetime warranty from the brand provides a safety net for long-term use.
• Standard 288-pin DIMM and 1.2V operation make it an easy drop-in for supported systems.

Cons

• Product appearance may vary and the picture is for reference only, so physical labeling or heatspreader style might differ from expectations.
• Faster memory will clock down to processor limits, so buyers cannot assume higher-than-2666MHz operation on all systems.

Specifications

Capacity	16GB (1x16GB)
Memory Type	ECC Non Registered DIMM
Speed	DDR4-21300, 2666MHz
Pin Count	288-pin
Voltage	1.2V
CAS Latency	CL19
Compatibility	Dell PowerEdge T140, T340, T40

Our Verdict

The CMS 16GB DDR4 21300 ECC DIMM is a sensible, cost-effective server memory upgrade for owners of the specified Dell PowerEdge models who need reliable ECC operation and assured compatibility. Its standard 2666MHz speed, 1.2V operation and lifetime warranty make it good value for targeted server refreshes, as long as buyers verify motherboard and CPU limits before relying on higher clock assumptions.

Frequently Asked Questions

Will this module work in my PowerEdge T140?
Yes, the product description lists guaranteed compatibility with the PowerEdge T140, but verify your server firmware and CPU support ECC at the installed speed.

Is this registered or unbuffered memory?
This is ECC Non Registered DIMM (unbuffered), not RDIMM, so confirm your server requires unbuffered ECC modules.

Does the module always run at 2666MHz?
It is rated for 2666MHz (DDR4-21300), but faster-capable memory may clock down to the optimal speed supported by your processor and motherboard.