---
product_id: 119676647
title: "Crucial 4GB DDR4 SDRAM Memory Module - 4 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21300 - 1.20 V - Non-ECC - Unbuffered - 260-Pin - SODIMM, 4GB Single Rank"
brand: "crucial"
price: "€ 92.16"
currency: EUR
in_stock: true
reviews_count: 8
category: "Crucial"
url: https://www.desertcart.it/products/119676647-crucial-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram
store_origin: IT
region: Italy
---

# 2666 MHz blazing speed 4GB DDR4 capacity 1.2V low power efficiency Crucial 4GB DDR4 SDRAM Memory Module - 4 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21300 - 1.20 V - Non-ECC - Unbuffered - 260-Pin - SODIMM, 4GB Single Rank

**Brand:** crucial
**Price:** € 92.16
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your workflow with Crucial speed and efficiency!

## Quick Answers

- **What is this?** Crucial 4GB DDR4 SDRAM Memory Module - 4 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21300 - 1.20 V - Non-ECC - Unbuffered - 260-Pin - SODIMM, 4GB Single Rank by crucial
- **How much does it cost?** € 92.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/119676647-crucial-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram)

## 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

- • **Plug & Play Upgrade:** Easy installation that instantly boosts your device’s responsiveness.
- • **Trusted Reliability:** Backed by Crucial’s limited warranty and 4.8-star user satisfaction.
- • **Energy-Smart Operation:** Runs efficiently at just 1.2V to keep your system cool and battery happy.
- • **Compact Yet Powerful 4GB Module:** Perfectly sized 260-pin SODIMM for sleek laptops and NAS devices.
- • **Turbocharge Your Laptop Performance:** Experience seamless multitasking with 2666 MHz DDR4 speed.

## Overview

The Crucial 4GB DDR4 SDRAM module delivers a high-speed 2666 MHz memory upgrade in a compact 260-pin SODIMM form factor. Operating at a low 1.2V voltage, it ensures energy-efficient performance ideal for laptops and NAS devices. With easy installation and proven reliability, this module is a cost-effective way to enhance multitasking and system responsiveness.

## Description

Specifications Mfr Part Number: CT4G4SFS8266 Type: DDR4 SODIMM capacity: 4GB speed: pc4-21300 2666MHz size & bit: 512M x 64 pins: 260pin ECC: no registered: no single rank x8 CL 19, 1.2V

Review: Great unofficial RAM for your Synology 220+ NAS - My current Synology 220+ RAM usage was constantly hovering around 70-80%. I started researching to see if any additional RAM could be added. You have a few options. You can go the Synology route and end up paying $90 for a 4GB stick. OR, you could purchase one of these for a fraction of the cost. Be aware that per Synology - you will void your warranty if you go with a non-Synology RAM. I took a leap of faith after much research and guess what?! This works perfectly. Installation was a breeze and my NAS recognized it immediately. It's been running so far for about a month with no issues. The best part? My RAM usage is now between 20-30%. Much better. I notice the OS runs a lot more smoothly as well now since the RAM wasn't being almost maxed out constantly. This is definitely worth the purchase if you would like to expand your RAM. Do your research. There are a lot of posts on Reddit that share the same success that I had. You could even go higher and get yourself a 8, 16 or 32GB stick. The 4GB was more than enough for what I use my NAS for (Plex and storage).
Review: Great choice works great easy install. Good price. - Works great install and pc worked like it was oem. Picked it up perfectly.

## Features

- 4GB DDR4 2666 MT/s (PC4-21300) CL19 SR x8 SODIMM 260pin

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07HP78DZ5 |
| Additional Features | Lightweight |
| Best Sellers Rank | #260 in Computer Memory |
| Brand | Crucial |
| Column Address Strobe Latency | 17 |
| Compatible Devices | Laptop |
| Computer Memory Size | 4 GB |
| Customer Reviews | 4.8 out of 5 stars 4,278 Reviews |
| Data Transfer Rate | 42664 Megabits Per Second |
| Form Factor | 260 pin_USO-DIMM |
| Global Trade Identification Number | 00649528787286 |
| Item Weight | 8 Grams |
| Manufacturer | Crucial |
| Memory Speed | 2666 MHz |
| Model Name | Trident |
| Number of Pins | 260 |
| RAM Memory Technology | DDR4 |
| RAM Size | 4 GB |
| Special Feature | Lightweight |
| UPC | 649528787286 064952878728 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | Limited Warranty |

## Product Details

- **Brand:** Crucial
- **Compatible Devices:** Laptop
- **Computer Memory Size:** 4 GB
- **Memory Speed:** 2666 MHz
- **RAM Memory Technology:** DDR4

## Images

![Crucial 4GB DDR4 SDRAM Memory Module - 4 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21300 - 1.20 V - Non-ECC - Unbuffered - 260-Pin - SODIMM, 4GB Single Rank - Image 1](https://m.media-amazon.com/images/I/61FsaYbk3UL.jpg)

## Questions & Answers

**Q: T4g4sfs8266 compatible with synology ds220+?**
A: Thank you for your inquiry. 
 
We see that we do not have guaranteed compatible memory available for Synology DS220+. There are a lot of considerations when choosing the correct memory for your system, including memory type, speeds, densities, and more. We request you to refer owners manual of your system and ensure motherboard specifications are matching with CT4G4SFS8266 memory.

Regards.

**Q: is this compatable with asus q524u**
A: we would like to inform you that the RAM CT4G4SFS8266 is compatible with q524uq, q524uqk.

**Q: Es un set de 2x4gb de memoria ram?el titulo lo hace difuso**
A: Hola Sergio,

Gracias por su pregunta, Sí, es el kit de 8G con 2X4Gb de RAM. hay dos modules de 4GB.

**Q: Is this compatible  with a toshiba satellite L455D-S5976?**
A: Thank you for choosing Crucial . We find  CT4G4SFS8266 is not compatible with Toshiba Satellite L455D-S5976

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great unofficial RAM for your Synology 220+ NAS
*by T***O on March 6, 2022*

My current Synology 220+ RAM usage was constantly hovering around 70-80%. I started researching to see if any additional RAM could be added. You have a few options. You can go the Synology route and end up paying $90 for a 4GB stick. OR, you could purchase one of these for a fraction of the cost. Be aware that per Synology - you will void your warranty if you go with a non-Synology RAM. I took a leap of faith after much research and guess what?! This works perfectly. Installation was a breeze and my NAS recognized it immediately. It's been running so far for about a month with no issues. The best part? My RAM usage is now between 20-30%. Much better. I notice the OS runs a lot more smoothly as well now since the RAM wasn't being almost maxed out constantly. This is definitely worth the purchase if you would like to expand your RAM. Do your research. There are a lot of posts on Reddit that share the same success that I had. You could even go higher and get yourself a 8, 16 or 32GB stick. The 4GB was more than enough for what I use my NAS for (Plex and storage).

### ⭐⭐⭐⭐⭐ Great choice works great easy install. Good price.
*by M***. on June 11, 2025*

Works great install and pc worked like it was oem. Picked it up perfectly.

### ⭐⭐⭐⭐⭐ Simple ram to upgrade my NAS.
*by L***. on July 5, 2025*

Simple, quick upgrade for my synology NAS that helps me get additional value from it, by being able to run more things simultaneously. Plugged right in, and worked right away.

## Frequently Bought Together

- Crucial 4GB DDR4 SDRAM Memory Module - 4 GB - DDR4 SDRAM - 2666 MHz DDR4-2666/PC4-21300 - 1.20 V - Non-ECC - Unbuffered - 260-Pin - SODIMM, 4GB Single Rank
- Synology 2-Bay DiskStation DS224+ (Diskless)
- Seagate IronWolf 8TB NAS Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 7200 RPM 256MB Cache for RAID Network Attached Storage – Frustration Free Packaging (ST8000VNZ04/N004)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-03-07*