Complete product information
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"title": "WD BLACK SN850X 4TB NVMe SSD - M 2 2280 Up to 7 300 MB s Read speeds",
"title_original": "WD_BLACK SN850X 4TB NVMe SSD - M.2 2280, Up to 7,300 MB/s Read speeds, Up to 6,300 MB/s write speeds, Gaming Expansion, High Performance Internal Solid State Drive - WDS400T2X0E",
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"TRANFORM YOUR PC: Insane speeds up to 7,300MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for your gaming PC or workstation — for the elite experience you’ve been waiting for.",
"MORE ROOM FOR MORE GAMES: Capacities up to 8TB built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster.",
"HEATSINK FOR THE WIN: The WD_BLACK SN850X NVMe SSD 1TB and 2TB drives have an optional heatsink version that not only looks awesome but also helps your rig maintain peak performance through the most intense gaming sessions.",
"DO MORE WITH WD_BLACK DASHBOARD: The downloadable WD_BLACK Dashboard (Windows only) monitors your drive’s health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience.",
"FUTURE FORWARD FREATURES: The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management (ATM).",
"POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation."
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"specs": {
"Hard Drive": "4000 GB Solid State Drive",
"Customer Reviews": "4.8 4.8 out of 5 stars (15,786) 4.8 out of 5 stars",
"Best Sellers Rank": "#6 in Internal Solid State Drives"
},
"category": "Electronics > Computers & Accessories > Data Storage > Internal Solid State Drives",
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"reviews": {
"average_rating": 4.8,
"customers_say": "Customers find the NVMe SSD incredibly fast, with great boot times and smooth performance, particularly for gaming. Customers consider it one of the best Gen 4 drives for its price.",
"items": [
{
"title": "5.0 out of 5 stars Lightning-fast, reliable, and built for performance — highly recommended.",
"body": "I’ve been using this drive for a few months, and it’s easily one of the fastest and most stable Gen4 SSDs I’ve tested. Benchmarks reached 7,133 MB/s read and 4,169 MB/s write in performance mode — right in line with WD’s specs. Even under load, it maintained around 6,500 MB/s read and 3,600 MB/s write, showing great consistency. For testing purposes, I also ran a power-saving “stress” scenario that intentionally limited performance to simulate extreme throttling. Those results were only for analysis — customers will never experience that kind of slowdown in normal use. Thermals stay solid with a basic heatsink (mid-50 °C), and there’s no throttling during long transfers. The WD Dashboard software is easy to use and adds an optional Gaming Mode for max speed. ⚖️ Pros: - Reaches full Gen4 performance (7,000+ MB/s reads) - Excellent sustained write speed and thermal stability - Rock-solid reliability for OS, games, or content creation - Intuitive WD Dashboard software ⚠️ Cons: - Can run warm without heatsink - Requires a PCIe Gen4 slot and good airflow for full speed 🏁 Final Thoughts: The WD_BLACK SN850X is a premium SSD that lives up to its reputation. Under the right conditions, it delivers near-theoretical Gen4 speeds and flawless stability. Even in multitasking or gaming scenarios, performance stays consistent and responsive. The “low” benchmark results included here were testing artifacts—stress conditions designed to show how power management affects throughput, not what normal users should expect. In everyday use, this drive is exceptionally fast, reliable, and built to last. ✅ Verdict: A flagship-level NVMe SSD that rewards systems tuned for performance. Highly recommended for gamers, developers, and creators who want speed with zero compromise. Read more",
"author": "R. Ortiz",
"rating": 5,
"date": "October 18, 2025",
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{
"title": "5.0 out of 5 stars Great SSD, but Not Compatible with the Kwumsy K3 Dock ⚠️💻",
"body": "The WD_BLACK 1TB SN850X NVMe Internal Gaming SSD is a top-tier Gen4 PCIe solid-state drive, delivering lightning-fast speeds and exceptional performance for gaming and multitasking. However, if you’re planning to use it with a Kwumsy K3 keyboard dock, be aware that this SSD isn’t compatible, as the M.2 slot in the dock requires a specific size or configuration. What makes the SN850X great: Blazing-fast performance: With Gen4 PCIe technology, the SN850X offers up to 7,300MB/s read speeds, ensuring lightning-fast load times for games and applications. It’s a beast for high-performance PCs and gaming rigs. ⚡🎮 Reliable storage: At 1TB, it provides ample space for large games, files, and programs while maintaining exceptional reliability and efficiency. 🗂️📈 Gaming-focused features: Optimized for gaming, the SN850X includes features like a low-latency mode for smoother gameplay and faster response times, making it ideal for gamers who demand peak performance. 🎯🔥 The issue with the Kwumsy K3: Unfortunately, while the Kwumsy K3 keyboard dock offers an M.2 slot, its size or power delivery isn’t compatible with the SN850X. Always double-check the size and type of the M.2 SSD slot (e.g., NVMe vs. SATA, 2230 vs. 2280 size) before purchasing an SSD for devices like docks or compact enclosures. 🛑💻 Bottom line: The WD_BLACK SN850X 1TB SSD is an outstanding choice for gamers and PC builders, but it’s not suitable for the Kwumsy K3 keyboard dock due to compatibility issues. Make sure to confirm the requirements of your device before purchasing to avoid compatibility hiccups. 💻⚡❌ Read more",
"author": "R Washington",
"rating": 5,
"date": "December 2, 2024",
"verified": false,
"images": []
},
{
"title": "5.0 out of 5 stars Extremely Fast and Reliable NVMe Drive",
"body": "I’ve been using the WD_BLACK SN850X 2TB NVMe SSD as my main drive and it’s been excellent. Installation was easy, and the speed difference was noticeable right away — fast boot times, quick game loads, and smooth performance overall. Thermals have stayed under control with normal airflow, and the 2TB capacity is perfect for a modern PC setup. No issues so far. Great choice if you want fast, reliable Gen 4 NVMe storage. Read more",
"author": "Nishimwe Felix",
"rating": 5,
"date": "December 28, 2025",
"verified": false,
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{
"title": "5.0 out of 5 stars ⭐️⭐️⭐️⭐️⭐️ Amazing Performance and Value!",
"body": "I've been using the WD_BLACK SN850X 2TB NVMe SSD, and it has exceeded my expectations in every way. The performance is outstanding — super-fast load times, seamless game launches, and blazing data transfer speeds. Whether you're gaming or handling large files, this drive handles it all with ease. Installation was simple, and it's been running flawlessly since day one. What truly impressed me is the price-to-performance ratio. For the level of speed and capacity you get, the value is exceptional. It's a top-tier upgrade without breaking the bank. If you're looking for a reliable, high-performance SSD for gaming or heavy workloads, I highly recommend the SN850X. Read more",
"author": "Renato Ramirez",
"rating": 5,
"date": "May 30, 2025",
"verified": false,
"images": []
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{
"title": "5.0 out of 5 stars Extreme speed and reliable performance for gaming",
"body": "The 1TB WD_BLACK SN850X was one of the best upgrades I made to my PC. Installation in M.2 format was quick and easy, and I noticed the difference from the very first boot: game loading times were drastically reduced, and the system responded with impressive smoothness. Speeds of up to 7,300 MB/s are truly noticeable in every large file transfer. Furthermore, the compact and elegant design fits perfectly in my system. Without a doubt, this is an SSD designed for gamers seeking power and stability. Read more",
"author": "Jonathan Céspedes",
"rating": 5,
"date": "November 25, 2025",
"verified": false,
"images": []
},
{
"title": "5.0 out of 5 stars Good product",
"body": "No issues. Runs fast Read more",
"author": "Joey",
"rating": 5,
"date": "December 31, 2025",
"verified": false,
"images": []
},
{
"title": "5.0 out of 5 stars Fast and reliable",
"body": "Solid drive. Worth every penny. Read more",
"author": "Mr. C. R. Turner",
"rating": 5,
"date": "December 16, 2025",
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"short_description": "Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe SSD. Available in capacities of 1TB up to 8TB, this gaming drive is built for top-tier performance. With 7,300MB/s speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable SANDISK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe SSD delivers a smooth, fast experience —and the innovations that let you compete at your absolute peak. POWERED BY SANDISK.",
"about_this_item": "Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe SSD. Available in capacities of 1TB up to 8TB, this gaming drive is built for top-tier performance. With 7,300MB/s speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable SANDISK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe SSD delivers a smooth, fast experience —and the innovations that let you compete at your absolute peak. POWERED BY SANDISK TRANFORM YOUR PC: Insane speeds up to 7,300MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for your gaming PC or workstation — for the elite experience you’ve been waiting for.; MORE ROOM FOR MORE GAMES: Capacities up to 8TB built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster.; HEATSINK FOR THE WIN: The WD_BLACK SN850X NVMe SSD 1TB and 2TB drives have an optional heatsink version that not only looks awesome but also helps your rig maintain peak performance through the most intense gaming s",
"long_description": "Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe SSD. Available in capacities of 1TB up to 8TB, this gaming drive is built for top-tier performance. With 7,300MB/s speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable SANDISK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe SSD delivers a smooth, fast experience —and the innovations that let you compete at your absolute peak. POWERED BY SANDISK\n\nHighlights: TRANFORM YOUR PC: Insane speeds up to 7,300MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for your gaming PC or workstation — for the elite experience you’ve been waiting for. MORE ROOM FOR MORE GAMES: Capacities up to 8TB built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster. HEATSINK FOR THE WIN: The WD_BLACK SN850X NVMe SSD 1TB and 2TB drives have an optional heatsink version that not only looks awesome but also helps your rig maintain peak performance through the most intense gaming sessions. DO MORE WITH WD_BLACK DASHBOARD: The downloadable WD_BLACK Dashboard (Windows only) monitors your drive’s health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience. FUTURE FORWARD FREATURES: The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management (ATM). POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation.\n\nKey details: Hard Drive: 4000 GB Solid State Drive | Customer Reviews: 4.8 4.8 out of 5 stars (15,786) 4.8 out of 5 stars\n\nWhat you can expect: TRANFORM YOUR PC: Insane speeds up to 7,300MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for your gaming PC or workstation — for the elite experience you’ve been waiting for. MORE ROOM FOR MORE GAMES: Capacities up to 8TB built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster. HEATSINK FOR THE WIN: The WD_BLACK SN850X NVMe SSD 1TB and 2TB drives have an optional heatsink version that not only looks awesome but also helps your rig maintain peak performance through the most intense gaming sessions. DO MORE WITH WD_BLACK DASHBOARD: The downloadable WD_BLACK Dashboard (Windows only) monitors your drive’s health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience. FUTURE FORWARD FREATURES: The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management (ATM). POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation.\n\nCustomer feedback: 4.8/5 average rating.\n\nCustomers say: Customers find the NVMe SSD incredibly fast, with great boot times and smooth performance, particularly for gaming. Customers consider it one of the best Gen 4 drives for its price.\n\nReview snippets: I’ve been using this drive for a few months, and it’s easily one of the fastest and most stable Gen4 SSDs I’ve tested. Benchmarks reached 7,133 MB/s read and 4,169 MB/s write in performance mode — right in line with / The WD_BLACK 1TB SN850X NVMe Internal Gaming SSD is a top-tier Gen4 PCIe solid-state drive, delivering lightning-fast speeds and exceptional performance for gaming and multitasking. However, if you’re planning to use it with a Kwumsy K3 keyboard dock, be aware\n\nFrom the manufacturer Get the Ultimate Gaming Edge Insane speeds up to 7,300 MB/s(1), (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for the elite gaming experience you’ve been waiting for. More Room for More Games Capacities up to 8TB(2) built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster. Do More w/ SANDISK Dashboard The downloadable SANDISK Dashboard (Windows only) monitors your drive’s health, and lets you customize your RGB lighting. Future-forward Features The WD_BLACK SN850X SSD - Powered by Sandisk boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and ATM(4). DirectStorage Supported Improve load times and get precious time back with Microsoft DirectStorage technology. SN850X NVMe Gaming SSD Add to Cart SN5100 NVMe SSD Add to Cart SN7100 NVMe Gaming SSD Add to Cart SN8100 NVMe SSD Add to Cart Customer Reviews 4.4 out of 5 stars 331 4.7 out of 5 stars 281 4.7 out of 5 stars 3,930 4.8 out of 5 stars 629 Price $901.99 $ 901 . 99 $215.48 $ 215 . 48 $460.24 $ 460 . 24 $549.99 $ 549 . 99 Capacities(2) Up to 8TB Up to 4TB Up to 4TB Up to 8TB Interface(3) PCIe Gen4x4 PCIe Gen4 PCIe Gen4 PCIe Gen 5 Sequential Read (MB/s) (1) Up to 7,200 (8TB model) Up to 7,100 Up to 7,250 (1-2TB models) Up to 14,900 Sequential Write (MB/s) (1) Up to 6,600 N/A Up to 6,900 (1-2TB models) N/A Great For Gaming",
"long_description_blocks": [
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"text": "Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe SSD. Available in capacities of 1TB up to 8TB, this gaming drive is built for top-tier performance. With 7,300MB/s speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable SANDISK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe SSD delivers a smooth, fast experience —and the innovations that let you compete at your absolute peak. POWERED BY SANDISK"
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"text": "Highlights: TRANFORM YOUR PC: Insane speeds up to 7,300MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for your gaming PC or workstation — for the elite experience you’ve been waiting for. MORE ROOM FOR MORE GAMES: Capacities up to 8TB built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster. HEATSINK FOR THE WIN: The WD_BLACK SN850X NVMe SSD 1TB and 2TB drives have an optional heatsink version that not only looks awesome but also helps your rig maintain peak performance through the most intense gaming sessions. DO MORE WITH WD_BLACK DASHBOARD: The downloadable WD_BLACK Dashboard (Windows only) monitors your drive’s health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience. FUTURE FORWARD FREATURES: The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management (ATM). POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation."
},
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"text": "Key details: Hard Drive: 4000 GB Solid State Drive | Customer Reviews: 4.8 4.8 out of 5 stars (15,786) 4.8 out of 5 stars"
},
{
"type": "p",
"text": "What you can expect: TRANFORM YOUR PC: Insane speeds up to 7,300MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for your gaming PC or workstation — for the elite experience you’ve been waiting for. MORE ROOM FOR MORE GAMES: Capacities up to 8TB built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster. HEATSINK FOR THE WIN: The WD_BLACK SN850X NVMe SSD 1TB and 2TB drives have an optional heatsink version that not only looks awesome but also helps your rig maintain peak performance through the most intense gaming sessions. DO MORE WITH WD_BLACK DASHBOARD: The downloadable WD_BLACK Dashboard (Windows only) monitors your drive’s health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience. FUTURE FORWARD FREATURES: The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management (ATM). POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation."
},
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"text": "Customer feedback: 4.8/5 average rating."
},
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"text": "Customers say: Customers find the NVMe SSD incredibly fast, with great boot times and smooth performance, particularly for gaming. Customers consider it one of the best Gen 4 drives for its price."
},
{
"type": "p",
"text": "Review snippets: I’ve been using this drive for a few months, and it’s easily one of the fastest and most stable Gen4 SSDs I’ve tested. Benchmarks reached 7,133 MB/s read and 4,169 MB/s write in performance mode — right in line with / The WD_BLACK 1TB SN850X NVMe Internal Gaming SSD is a top-tier Gen4 PCIe solid-state drive, delivering lightning-fast speeds and exceptional performance for gaming and multitasking. However, if you’re planning to use it with a Kwumsy K3 keyboard dock, be aware"
},
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"text": "From the manufacturer Get the Ultimate Gaming Edge Insane speeds up to 7,300 MB/s(1), (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for the elite gaming experience you’ve been waiting for. More Room for More Games Capacities up to 8TB(2) built with SANDISK TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster. Do More w/ SANDISK Dashboard The downloadable SANDISK Dashboard (Windows only) monitors your drive’s health, and lets you customize your RGB lighting. Future-forward Features The WD_BLACK SN850X SSD - Powered by Sandisk boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and ATM(4). DirectStorage Supported Improve load times and get precious time back with Microsoft DirectStorage technology. SN850X NVMe Gaming SSD Add to Cart SN5100 NVMe SSD Add to Cart SN7100 NVMe Gaming SSD Add to Cart SN8100 NVMe SSD Add to Cart Customer Reviews 4.4 out of 5 stars 331 4.7 out of 5 stars 281 4.7 out of 5 stars 3,930 4.8 out of 5 stars 629 Price $901.99 $ 901 . 99 $215.48 $ 215 . 48 $460.24 $ 460 . 24 $549.99 $ 549 . 99 Capacities(2) Up to 8TB Up to 4TB Up to 4TB Up to 8TB Interface(3) PCIe Gen4x4 PCIe Gen4 PCIe Gen4 PCIe Gen 5 Sequential Read (MB/s) (1) Up to 7,200 (8TB model) Up to 7,100 Up to 7,250 (1-2TB models) Up to 14,900 Sequential Write (MB/s) (1) Up to 6,600 N/A Up to 6,900 (1-2TB models) N/A Great For Gaming"
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