---
product_id: 59707351
title: "Crucial CT8G4SFS8266 8 GB DDR4 2666 MT/s (PC4-21300) CL19 SR x 8 260-Pin Unbuffered SODIMM Memory"
brand: "crucial"
price: "$155.54"
currency: USD
in_stock: true
reviews_count: 13
category: "Crucial"
url: https://www.desertcart.us/products/59707351-crucial-ct8g4sfs8266-8-gb-ddr4-2666-mt-s-pc4-21300
store_origin: US
region: United States of America
---

# 2666 MHz blazing speed 8 GB DDR4 capacity 260-pin SO-DIMM form factor Crucial CT8G4SFS8266 8 GB DDR4 2666 MT/s (PC4-21300) CL19 SR x 8 260-Pin Unbuffered SODIMM Memory

**Brand:** crucial
**Price:** $155.54
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your laptop’s brainpower and never miss a beat!

## Quick Answers

- **What is this?** Crucial CT8G4SFS8266 8 GB DDR4 2666 MT/s (PC4-21300) CL19 SR x 8 260-Pin Unbuffered SODIMM Memory by crucial
- **How much does it cost?** $155.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/59707351-crucial-ct8g4sfs8266-8-gb-ddr4-2666-mt-s-pc4-21300)

## Best For

- crucial enthusiasts

## Why This Product

- Trusted crucial brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Slim 260-pin SO-DIMM fits perfectly in laptops without compromising space or speed.
- • **Plug & Play Upgrade:** Effortless installation designed for seamless compatibility with OEM laptop systems.
- • **Turbocharge Your Laptop:** Boost multitasking and app performance with lightning-fast 2666 MT/s DDR4 memory.
- • **Reliability You Can Trust:** 100% component and module tested to ensure rock-solid stability and longevity.
- • **Future-Proof Your Workflow:** DDR4 technology delivers efficient power consumption at just 1.2V for sustained performance.

## Overview

The Crucial CT8G4SFS8266 is an 8 GB DDR4 SO-DIMM memory module running at 2666 MHz with a CL19 latency, designed to enhance laptop performance. It features a 260-pin unbuffered form factor, is fully tested for reliability, and offers easy installation with broad OEM compatibility, making it a smart, efficient upgrade for professionals seeking faster multitasking and smoother workflows.

## Description

Buy

Review: Easy to install and works flawlessly. - Crucial's website has a useful tool where you can enter your model number and it'll show you everything they have that's compatible with your system. I recommend using it if you are not sure of the type you need. I used their tool. It said this was the ram for my system so I came back here and purchased it. I opened my laptop, installed the additional ram, turned it back on, and that was all I needed to do. Everything just worked and the performance increase is quite noticeable - for a relatively cheap upgrade. My laptop is the Asus FX505DY FWIW.
Review: Warehouse Deals - I recently purchased a laptop with the intention of upgrading its Ram to 16gb from 8gb. I had a look around to find an affordable DDR4 SODIM and struggled before checking desertcart Warehouse Deals. This was a returned item with some VERY minor imperfections. Managed to knock a chunk off the price for a small scratch on the label...Something I’ll likely never see again! Very easy to install in my laptop. Booted up and all showing correctly in CPUZ. Ran some tests to ensure no faults or errors and happy to say it was like new! Very happy with this purchase. Well worth checking out desertcart Warehouse Deals to save yourself a little extra if thinking about buying new!

## Features

- Increases laptop performance
- Easy to install
- Compatible with OEM systems
- 100% component and module tested for superior reliability
- Available in DDR to DDR4 memory technology

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071KNKBQ1 |
| Best Sellers Rank | 23,248 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 124 in Computer Memory |
| Brand | Crucial |
| Brand Name | Crucial |
| Column Address Strobe Latency | 19 Nanoseconds |
| Compatible Devices | Laptop |
| Compatible devices | Laptop |
| Computer memory size | 8 GB |
| Customer Reviews | 4.7 out of 5 stars 9,495 Reviews |
| Data Transfer Rate | 2400 Megabytes Per Second |
| Form Factor | SO-DIMM |
| Global Trade Identification Number | 00649528780065 |
| Item Type Name | Crucial CT8G4SFS8266 8 GB SO-DIMM 260-Pin, 2666 MHz / PC4-21300, CL19, Unbuffered, Non-ECC Memory - Multi-Colour |
| Item Weight | 9 g |
| Manufacturer | Micron |
| Manufacturer Part Number | CT8G4SFS8266 |
| Memory Form Factor | SODIMM |
| Memory Generation | DDR4 |
| Memory Speed | 2666 MHz |
| Memory speed | 2666 MHz |
| Model Name | Crucial 8GB (1x8GB) DDR4 SODIMM 2666MHz CL19 Single Stick |
| Model Number | CT8G4SFS8266 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pins | 260 |
| Product Features | Registry Store |
| Product Warranty | Limited lifetime warranty |
| RAM Memory Technology | DDR4 |
| RAM Size | 8 GB |
| RAM memory technology | DDR4 |
| Special feature | Registry Store |
| UPC | 649528780065 753459243732 |
| Voltage | 1.2 Volts (DC) |

## Product Details

- **Brand:** Crucial
- **Compatible devices:** Laptop
- **Computer memory size:** 8 GB
- **Memory speed:** 2666 MHz
- **RAM memory technology:** DDR4

## Images

![Crucial CT8G4SFS8266 8 GB DDR4 2666 MT/s (PC4-21300) CL19 SR x 8 260-Pin Unbuffered SODIMM Memory - Image 1](https://m.media-amazon.com/images/I/71yLCwfhrsL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Easy to install and works flawlessly.
*by B***N on 11 May 2019*

Crucial's website has a useful tool where you can enter your model number and it'll show you everything they have that's compatible with your system. I recommend using it if you are not sure of the type you need. I used their tool. It said this was the ram for my system so I came back here and purchased it. I opened my laptop, installed the additional ram, turned it back on, and that was all I needed to do. Everything just worked and the performance increase is quite noticeable - for a relatively cheap upgrade. My laptop is the Asus FX505DY FWIW.

### ⭐⭐⭐⭐⭐ Warehouse Deals
*by S***T on 16 April 2019*

I recently purchased a laptop with the intention of upgrading its Ram to 16gb from 8gb. I had a look around to find an affordable DDR4 SODIM and struggled before checking Amazon Warehouse Deals. This was a returned item with some VERY minor imperfections. Managed to knock a chunk off the price for a small scratch on the label...Something I’ll likely never see again! Very easy to install in my laptop. Booted up and all showing correctly in CPUZ. Ran some tests to ensure no faults or errors and happy to say it was like new! Very happy with this purchase. Well worth checking out Amazon Warehouse Deals to save yourself a little extra if thinking about buying new!

### ⭐⭐⭐⭐⭐ Great for gaming laptops. And a decent Ram stick in general
*by F***. on 14 July 2020*

I have a 8gb laptop and I brought this ram stick to be able to play more intensive triple AAA games that would need more the 8gb. And this ram is was more then enough. The 2666mhz was defiantly fast enough to keep up with most demanding games. Also it took me like 15 minutes to install the RAM is and most of it is screwing and unscrewing the laptop. So overall I would suggest this RAM stock to anyone and everyone who wants extra RAM for any specific reason. At a reasonable price

## Frequently Bought Together

- Crucial 8GB Single DDR4 2666 MT/s (PC4-21300) SR X8 SODIMM 260-Pin Memory - CT8G4SFS8266
- ARCTIC MX-4 (4 g) - Premium Performance Thermal Paste for All Processors (CPU, GPU - PC), Very high Thermal Conductivity, Long Durability, Safe Application, Non-Conductive
- Crucial P3 Plus 1TB PCIe Gen4 3D NAND NVMe M.2 SSD, up to 5000MB/s - CT1000P3PSSD8

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-17*