--- product_id: 119676647 title: "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: "€ 100.35" currency: EUR in_stock: true reviews_count: 13 category: "Crucial" url: https://www.desertcart.be/products/119676647-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram-2666 store_origin: BE region: Belgium --- # 2666 MHz blazing speed 4GB DDR4 capacity 1.2V low power efficiency 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:** € 100.35 **Availability:** βœ… In Stock ## Summary > πŸš€ Upgrade your workflow with Crucial DDR4 β€” speed, efficiency, and reliability in one sleek stick! ## Quick Answers - **What is this?** 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?** € 100.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/119676647-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram-2666) ## 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 - β€’ **Plug & Play Upgrade:** Easy installation with instant recognitionβ€”no hassle, just speed - β€’ **Trusted Compatibility:** Widely compatible with Synology NAS and laptops, proven by thousands of users - β€’ **Energy-Smart Operation:** Runs efficiently at just 1.2V to keep your system cool and battery happy - β€’ **Sleek & Lightweight Design:** 260-pin SODIMM form factor perfect for laptops and compact devices - β€’ **Boost Your Multitasking Power:** 4GB DDR4 RAM at 2666 MT/s for seamless performance ## 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 like Synology 220+ and 423+. With easy installation and broad compatibility, this lightweight, single-rank memory stick enhances multitasking and system responsiveness, making it a cost-effective upgrade favored by tech-savvy professionals. ## 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: works for 423+ synology - works for 423+ synology ## 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 | #277 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 4,203 Reviews | | Data Transfer Rate | 42664 megabits_per_second | | Form Factor | 260 pin_USO-DIMM | | Global Trade Identification Number | 00649528787286 | | Item Weight | 8 g | | Manufacturer | Crucial | | Memory Form Factor | SODIMM | | Memory Generation | DDR4 | | Memory Speed | 2666 MHz | | Mfr Part Number | CT4G4SFS8266 | | Model Name | Trident | | Model Number | CT4G4SFS8266 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pins | 260 | | RAM Memory Technology | DDR4 | | RAM Size | 4 GB | | Special Feature | Lightweight | | UPC | 649528787286 064952878728 | | Unit Count | 1 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 ![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) ## Available Options This product comes in different **Size** options. ## 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, SΓ­, 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). ### ⭐⭐⭐⭐⭐ works for 423+ synology *by A***X on July 12, 2026* works for 423+ synology ### ⭐⭐⭐⭐⭐ Excellent, Works with DS224+ *by G***G on February 14, 2024* I had been looking to add RAM to my synology DS224+ and found this kit after erroneously buying a non-compatable stick. This allowed me to save around $60 without buying Synologys rebranded memory while retaining its compatibility. I had no error messages after installing and my system loads photos significantly faster. I've heard some say that this can void your warranty but my DS224+ manual states that the warranty will only be void if the RAM caused the issue. Maybe i'm living in the fast lane but i think this is a non-issue ## 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) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/119676647-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram-2666](https://www.desertcart.be/products/119676647-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram-2666) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-08-13*