MICRON
MICRON CT4G4RFS8266 CRUCIAL 4GB DDR4-2666MHZ PC4-21300 ECC DIMM MEMORY
Mfg Part Number: CT4G4RFS8266 , Item #: 5909126
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Price: $449.58
Quantity:
More to Come
Last Updated: Dec 28, 2025
No Sales Tax except these states
, PO and Wire.
PRODUCT HIGHLIGHTS
Buying new servers is expensive. Getting more out of your current infrastructure isn't.
By installing Crucial RDIMMs, you'll be able to maximize the performance capability of your CPUs and optimize your servers' computing potential. Since memory typically functions as a fixed (non-shared) component, it's often a bigger performance constraint than processors or storage drives, which can be shared. Maximize your investment in server infrastructure by maximizing memory capacity.
Get more out of your IT budget
At a fraction of the cost of new servers, Crucial RDIMMs allow you to extend the life and performance of your existing infrastructure and get more out of the rack space you already have. Even if you need to replace existing deployments, you can still save by buying servers with the least amount of preinstalled memory, then maximizing the installed memory capacity with Crucial RDIMMs.
Compatible with OEM servers and warranties
Similar to how you can upgrade a server's preinstalled components and choose whichever brands you want, you can do the same with memory - without having to worry about voiding your manufacturer's warranty. In terms of system compatibility, Crucial RDIMMs are optimized for the latest Intel® Xeon® processor product families and 100% component and module tested.
Run more virtual machines and increase the responsiveness of virtualized applications
Since most of today's enterprise applications are stored on servers and distributed to a number of virtual machines, the amount of installed server memory plays a more critical role than ever before. Every virtual machine running on a server typically requires a dedicated amount of memory, meaning the more virtual machines you're running, the more memory you'll need.
Available in the latest technology
Built with new technology tailored for the latest Intel platforms, Crucial DDR4 RDIMMs allow you to increase system performance with memory speeds up to 2666 MT/s and densities up to 32GB. Increasing the installed memory capacity of each server with modules equipped with 8Gb-based components enables your systems to reach their full performance potential - especially without rank limitations.
Backed by the Reliance Program*
When you make an enterprise-level investment in Crucial® products, we believe you deserve a higher level of support. The Reliance Program offers qualified customers up to four additional benefits that affirm our commitment to your servers through service call reimbursements, on-site spares, 24/7 technical support through our direct hotline, and special bulk shipping options.
- Increase server performance
- Optimized for the latest Intel® Xeon® processor product families
- Compatible with OEM servers and OEM warranties
- 100% component and module tested to mission-critical server standards
- Backed by the Reliance Program
- Limited lifetime warranty
Buying new servers is expensive. Getting more out of your current infrastructure isn't.
Maximizing a server's installed memory capacity with Crucial RDIMMs is one of the easiest and most affordable ways to make your deployments faster and more efficient. Crucial RDIMMs contain a register chip, which directs data commands and helps control the flow of data within the server. By virtue of the register chip, Crucial RDIMMs have ECC parity, which helps prevent data errors and increases overall system reliability.
Speed up server applicationsBy installing Crucial RDIMMs, you'll be able to maximize the performance capability of your CPUs and optimize your servers' computing potential. Since memory typically functions as a fixed (non-shared) component, it's often a bigger performance constraint than processors or storage drives, which can be shared. Maximize your investment in server infrastructure by maximizing memory capacity.
Get more out of your IT budget
At a fraction of the cost of new servers, Crucial RDIMMs allow you to extend the life and performance of your existing infrastructure and get more out of the rack space you already have. Even if you need to replace existing deployments, you can still save by buying servers with the least amount of preinstalled memory, then maximizing the installed memory capacity with Crucial RDIMMs.
Compatible with OEM servers and warranties
Similar to how you can upgrade a server's preinstalled components and choose whichever brands you want, you can do the same with memory - without having to worry about voiding your manufacturer's warranty. In terms of system compatibility, Crucial RDIMMs are optimized for the latest Intel® Xeon® processor product families and 100% component and module tested.
Run more virtual machines and increase the responsiveness of virtualized applications
Since most of today's enterprise applications are stored on servers and distributed to a number of virtual machines, the amount of installed server memory plays a more critical role than ever before. Every virtual machine running on a server typically requires a dedicated amount of memory, meaning the more virtual machines you're running, the more memory you'll need.
Available in the latest technology
Built with new technology tailored for the latest Intel platforms, Crucial DDR4 RDIMMs allow you to increase system performance with memory speeds up to 2666 MT/s and densities up to 32GB. Increasing the installed memory capacity of each server with modules equipped with 8Gb-based components enables your systems to reach their full performance potential - especially without rank limitations.
Backed by the Reliance Program*
When you make an enterprise-level investment in Crucial® products, we believe you deserve a higher level of support. The Reliance Program offers qualified customers up to four additional benefits that affirm our commitment to your servers through service call reimbursements, on-site spares, 24/7 technical support through our direct hotline, and special bulk shipping options.
Main Specification
| General Information | |
| Manufacturer | Micron Technology, Inc |
| Manufacturer Part Number | CT4G4RFS8266 |
| Manufacturer Website Address | http://www.micron.com |
| Brand Name | Micron |
| Product Name | 4GB DDR4-2666 RDIMM |
| Product Type | RAM Module |
| Technical Information | |
| Memory Size | 4 GB |
| Memory Technology | DDR4 SDRAM |
| Memory Voltage | 1.20 V |
| Number of Modules | 1 x 4GB |
| Memory Speed | 2666 MHz |
| Memory Standard | DDR4-2666/PC4-21300 |
| Error Checking | ECC |
| Signal Processing | Registered |
| CAS Latency | CL19 |
| Device Supported | Server |
| Physical Characteristics | |
| Number of Pins | 288-pin |
| Form Factor | DIMM |
WARNING:: The plastic used in cable products can expose you to lead and lead components,
chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
