Crucial 16GB DDR4 2666 MHz UDIMM Desktop Memory Module

The Crucial CT16G4DFRA266 is a single 16 GB DDR4 memory module designed for desktop systems that use standard 288-pin DIMM slots. Running at 2666 MHz (PC4-21300) with a CAS latency of 19 and a low 1.2 V operating voltage, it offers a straightforward way to add more memory bandwidth without adjusting custom profiles or resorting to overclocking.

Installing this module can shorten application load times, keep more browser tabs open, and improve overall system responsiveness during everyday use or light content creation. Because it is an unbuffered module without error-correcting code, it fits naturally in home or office desktops, small gaming rigs, and do-it-yourself builds where stability and plug-and-play simplicity matter most.

Most modern motherboards that accept DDR4 memory will recognize the module automatically, so the upgrade process usually involves nothing more than opening the case, seating the DIMM, and powering the system back on. The slim PCB profile also helps when space around the memory slots is limited by larger CPU coolers or tight case layouts.

Highlights:

• 16 GB capacity on a single DDR4 module
• 2666 MHz data rate, PC4-21300 classification
• CAS latency of 19 for balanced speed and stability
• Standard 288-pin UDIMM format for desktop motherboards
• 1.2 V operating voltage that aligns with DDR4 specifications
• Unbuffered design without ECC for mainstream desktop use