--- 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: "515 Lei" currency: RON in_stock: true reviews_count: 13 category: "Crucial" url: https://www.desertcart.ro/products/119676647-crucial-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram store_origin: RO region: Romania --- # 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:** 515 Lei **Availability:** βœ… In Stock ## Summary > πŸš€ Upgrade your memory, upgrade your workflow β€” don’t get left behind! ## 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?** 515 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/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 - β€’ **Plug & Play Compatibility:** Effortless installation with broad support including Synology NAS models. - β€’ **Blazing 2666 MHz DDR4 Speed:** Experience ultra-responsive multitasking and seamless NAS performance. - β€’ **Energy-Smart 1.2V Operation:** Keeps your system cool and power-efficient for longer, greener uptime. - β€’ **Cost-Effective Performance Boost:** Upgrade your system’s memory without breaking the bank or warranty fears. - β€’ **Compact 260-Pin SODIMM Form Factor:** Perfectly engineered for laptops and compact NAS devices without bulk. ## Overview The Crucial 4GB DDR4 SDRAM module delivers a high-speed 2666 MHz data rate in a compact 260-pin SODIMM form factor, optimized for laptops and NAS devices. Operating at an energy-efficient 1.2V, it offers reliable, low-latency performance (CL19) with non-ECC, single-rank architecture. Widely compatible and easy to install, this memory upgrade is a budget-friendly way to enhance multitasking and system responsiveness, especially for Synology NAS users seeking smoother operation and reduced RAM bottlenecks. ## 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: Works Great in my NAS - Compatible with my Synology DS225+ NAS device and definitely improves the performance with interacting with the NAS through the DiskStation software. Apparently, although Synology claims that this device only supports 4GB of additional RAM, people have added up to 16GB without any problems. I might have bought a different stick had I known that, but at this point, the deed is done. Even the 4GB helps. 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). ## 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 | #338 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 4,204 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 ![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) ![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 2](https://m.media-amazon.com/images/I/710w79j715L.jpg) ![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 3](https://m.media-amazon.com/images/I/61-737PUDOL.jpg) ![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 4](https://m.media-amazon.com/images/I/61phcwp7f7L.jpg) ![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 5](https://m.media-amazon.com/images/I/71agpnji7IL.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 ### ⭐⭐⭐⭐⭐ Works Great in my NAS *by G***. on August 10, 2026* Compatible with my Synology DS225+ NAS device and definitely improves the performance with interacting with the NAS through the DiskStation software. Apparently, although Synology claims that this device only supports 4GB of additional RAM, people have added up to 16GB without any problems. I might have bought a different stick had I known that, but at this point, the deed is done. Even the 4GB helps. ### ⭐⭐⭐⭐⭐ 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 ## 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.ro/products/119676647-crucial-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram](https://www.desertcart.ro/products/119676647-crucial-4gb-ddr4-sdram-memory-module-4-gb-ddr4-sdram) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-08-30*