Crucial 4GB DDR4 2666MHz SODIMM Laptop Memory (CT4G4SFS6266)


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The fast, easy way to improve your laptop’s performance

  • There’s an easy cure for a slow computer: more memory.
  • CRUCIAL 4GB DDR4 2666MHz SODIMM laptop memory is Designed to help your system run faster and smoother, Crucial® Laptop Memory is one of the easiest and most affordable ways to improve your system’s performance. Load programs faster.
  • Increase responsiveness. Run data-intensive applications with ease, and increase your laptop’s multitasking capabilities.

Make everything on your computer faster

  • Memory is a component in your computer that allows for short-term data access. Since your system’s moment-to-moment operations rely on short-term data access – loading applications, browsing the Web or editing a spreadsheet – the speed and amount of memory in your system plays a critical role. Load apps in seconds by increasing the speed of your memory and installing more of it.

Multitask with ease

  • If you’re like us, you use your computer to do a lot of things at once.
  • You might be editing a document, while also looking at pictures and browsing the internet. This naturally leads to a performance problem: every app you’re running requires memory and competes for a limited pool of resources.
  • Overcome this by installing high-density modules like CRUCIAL 4GB DDR4 2666MHz SODIMM in each memory slot for seamless multitasking.

Install with ease – no computer skills required

  • With just a screwdriver, your owner’s manual, and a few minutes of time, you can install CRUCIAL 4GB DDR4 2666MHz SODIMM memory – no computer skills necessary.
  • Just watch one of our three-minute install videos, and we’ll walk you step-by-step through the process. Don’t pay a computer shop to do something you can do in minutes!

Maximize the value of your system

  • At a fraction of the cost of a new system, a memory upgrade is one of the most affordable ways to increase performance. Get more out of your laptop by giving it the resources it needs to perform.

Micron® quality – a higher level of reliability.

  • As a brand of Micron, one of the largest memory manufacturers in the world, CRUCIAL 4GB DDR4 2666MHz SODIMM Memory is the standard for reliable performance.
  • From the original SDRAM technology all the way to DDR4, we’ve engineered the memory technologies that have powered the world’s computers for 40 years and counting.
  • When you choose CRUCIAL 4GB DDR4 2666MHz SODIMM memory, you’re choosing memory that’s backed by a limited lifetime warranty and designed for the world’s leading systems. Don’t settle for anything less.

SKU: CT4G4SFS6266 Category: Tags: , , , , , ,
Ram Size

Ram Speed

Ram Type

Technology DDR4
Speed  DDR4-2666
PC speed PC4-21300
Density  4GB
Module type SODIMM
DIMM type Unbuffered
CAS latency  19
Voltage 1.2V
Kit Qty 1
Warranty  Limited Lifetime



Memory and storage are crucial – your system won’t work without them.

Every time you press your system’s power button, load apps, save documents, stream content or virtualize databases, you’re using memory or storage. As a brand of Micron, one of the largest memory manufacturers in the world, we bring you the quality and expertise that’s been built into new computers for 35-plus years. You’ll notice the difference.

Expertise is Crucial

We live and breathe memory and storage, but it’s not just a work thing. We build our own rigs, geek out over new technology, and game as soon as we’re off the clock. We’re constantly learning, and we like jumping on the forums to answer your questions just as much as we enjoy walking you through the install process so you don’t have to figure it out on your own.

Compatibility is Crucial

In just three questions, we’ll learn enough about your system to provide a list of guaranteed compatible part.

Reliability is Crucial

From sand to silicon to finished product, every Crucial memory module and SSD must pass hundreds of quality inspections.

Commitment is Crucial

Thirty-five years ago when Micron started, we were one of over 40 memory manufacturers. Now there are just a handful.

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