{"product_id":"wd_black-sn850x-nvme-ssd-4tb","title":"WD_BLACK SN850X NVMe SSD - 4TB (Retail Package)","description":"\u003cp\u003e\u003cstrong\u003ePart No. WDS400T2X0E\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0847\/8540\/files\/wd-ssd-4tb-package-hero.png?v=1781707576\" alt=\"WD_BLACK SN850X NVMe SSD 4TB in retail packaging.\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp style=\"font-size: 40px; line-height: 45px; text-align: center; color: #6b539c;\"\u003e\u003cstrong\u003eGo Beyond Fast\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 30px; line-height: 35px; text-align: center; color: #000000;\"\u003e\u003cstrong\u003eWD_BLACK SN850X NVMe SSD (4TB)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 22px; line-height: 25px; text-align: center; color: #808080;\"\u003ePremium PCIe 4.0 Performance Engineered for Demanding Creative, Professional, and Gaming Workloads\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003ePerformance, Unleashed\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eCrush load times and power through demanding workloads with the 4TB\u003csup\u003e(1)\u003c\/sup\u003e WD_BLACK SN850X NVMe SSD. Built with exceptional performance, it delivers read speeds up to 7,300MB\/s\u003csup\u003e(2)\u003c\/sup\u003e, helping accelerate everything from modern games to content creation, large file transfers, and data-intensive applications. The downloadable WD_BLACK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features for an optimized gaming experience.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0847\/8540\/files\/wd-ssd-4tb-hero.png?v=1781707622\" alt=\"Western Digital 4TB SSD front view.\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003cbr\u003e\u003cbr\u003eWhether you’re competing online, editing 4K and 8K video, or managing massive project files, the WD_BLACK SN850X NVMe SSD provides the speed, responsiveness, and sustained performance needed to keep you moving forward.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0847\/8540\/files\/wd-ssd-lifestyle-hero.png?v=1781704836\" alt=\"Western Digital SSD on desk with MacBook Pro and Sonnet Echo 21 Thunderbolt 5 SuperDock in the background.\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cdiv class=\"ssd-comparison\"\u003e\n\u003ch2\u003eKingston and Western Digital SSDs Comparison\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eKingston NV3 PCIe 4.0 SSD\u003c\/th\u003e\n\u003cth\u003eWD_BLACK SN850X NVMe SSD\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eEveryday storage, productivity, and value\u003c\/td\u003e\n\u003ctd\u003eGaming, creative work, and demanding workflows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePCIe Interface\u003c\/td\u003e\n\u003ctd\u003ePCIe 4.0 x4\u003c\/td\u003e\n\u003ctd\u003ePCIe 4.0 x4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Read Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 6,000 MB\/s*\u003c\/td\u003e\n\u003ctd\u003eUp to 7,300 MB\/s*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Write Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 4,000 MB\/s*\u003c\/td\u003e\n\u003ctd\u003eUp to 6,600 MB\/s*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEveryday Productivity\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProfessional Workflows\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLarge Media Projects\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGaming\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eExceptional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eValue\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Speed\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"ssd-note\"\u003e*Performance may vary depending on host device, capacity, configuration, and system conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n\n  .ssd-comparison {\n\n    width: 100%;\n\n    margin: 32px 0;\n\n    font-family: inherit;\n\n  }\n\n  .ssd-comparison h2 {\n\n    margin: 0 0 20px;\n\n    font-size: 28px;\n\n    font-weight: 700;\n\n    color: #111;\n\n  }\n\n  .ssd-comparison table {\n\n    width: 100%;\n\n    border-collapse: collapse;\n\n    border: 1px solid #e5e5e5;\n\n    background: #fff;\n\n  }\n\n  .ssd-comparison th {\n\n    background: #f5f5f5;\n\n    color: #111;\n\n    font-weight: 700;\n\n    text-align: left;\n\n    padding: 16px;\n\n    border: 1px solid #e5e5e5;\n\n  }\n\n  .ssd-comparison td {\n\n    padding: 15px 16px;\n\n    border: 1px solid #e5e5e5;\n\n    color: #333;\n\n    vertical-align: top;\n\n  }\n\n  .ssd-comparison tbody tr:nth-child(even) {\n\n    background: #fafafa;\n\n  }\n\n  .ssd-note {\n\n    margin-top: 10px;\n\n    font-size: 12px;\n\n    color: #666;\n\n  }\n\n  @media (max-width: 700px) {\n\n    .ssd-comparison {\n\n      overflow-x: auto;\n\n    }\n\n    .ssd-comparison table {\n\n      min-width: 700px;\n\n    }\n\n  }\n\n\u003c\/style\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features \u0026amp; Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransform Your Workflow –\u003c\/strong\u003e Get exceptional performance and fast load times for gaming, content creation, and demanding professional applications with speeds up to 7,300 MB\/s\u003csup\u003e(2)\u003c\/sup\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore Capacity for What Matters –\u003c\/strong\u003e Store more games, media assets, project files, and applications without constantly managing storage space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo More with Dashboard –\u003c\/strong\u003e The downloadable SANDISK Dashboard (Windows only) monitors your drive’s health, and can automatically detect games to turn on Game Mode 2.0.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuture-forward Features –\u003c\/strong\u003e The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management [ATM]\u003csup\u003e(3)\u003c\/sup\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirectStorage Support –\u003c\/strong\u003e Improve load times and get precious time back with Microsoft DirectStorage technology.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003eForm Factor –\u003c\/strong\u003e M.2 2280.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003eInterface\u003csup\u003e(4)\u003c\/sup\u003e – \u003c\/strong\u003e\u003cspan\u003ePCIe Gen4 16 GT\/s up to 4 lanes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003eCapacity\u003csup\u003e(1)\u003c\/sup\u003e –\u003c\/strong\u003e 4\u003cspan\u003eTB.\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequential Read\/Write\u003csup\u003e(5)\u003c\/sup\u003e –\u003c\/strong\u003e 7300\u003cspan\u003e\/6,600 MB\/s.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEndurance [Total Bytes Written]\u003csup\u003e(6)\u003c\/sup\u003e –\u003c\/strong\u003e 1,200.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature\u003csup\u003e(7)\u003c\/sup\u003e –\u003c\/strong\u003e 0°C~70°C.\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003eStorage Temperature\u003csup\u003e(8)\u003c\/sup\u003e –\u003c\/strong\u003e C-40°C~85°C.\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003eDimensions – \u003c\/strong\u003e80 ±0.2mm x 22 ± 0.15mm x 2.38mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight – \u003c\/strong\u003e7.5 ± 1g.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Non-Operating – \u003c\/strong\u003e20G (10-1000Hz).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMTBF – \u003c\/strong\u003e2,000,000 hours.\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003ePackage Contents –\u003c\/strong\u003e WD_BLACK SN850X NVMe SSD (4TB model) retail package.\u003c\/li\u003e\n\u003cli class=\"\"\u003e\n\u003cstrong\u003eWarranty\/Support\u003csup\u003e(9)\u003c\/sup\u003e –\u003c\/strong\u003e Limited 5-year warranty via SanDisk.\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e(1) 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.\u003cbr\u003e(2) Based on read speed, unless otherwise stated. 1 MB\/s = 1 million bytes per second. Based on SanDisk internal testing; performance may vary depending upon host device, usage conditions, drive capacity and other factors.\u003cbr\u003e(3) Requires the downloadable WD_BLACK Dashboard (Windows only).\u003cbr\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e(4) PCIe Gen4 storage technology requires a compatible motherboard. Backwards compatible with PCIe Gen3 x4, PCIe Gen3 x2, PCIe Gen3 x1, PCIe Gen2 x4,PCIe Gen2 x2 and PCIe Gen2 x1.\u003cbr\u003e(5) Based on “out-of-box performance” using a PCIe 4.0 motherboard. Speed may vary due to host hardware, software, and usage.\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e(6) \u003c\/span\u003eTBW (terabytes written) values calculated using JEDEC client workload (JESD219) and vary by product capacity.\u003cbr\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e(7) Operational temperature is defined as temperature reported by the drive. Note that drive temperature readings are expected to be higher than ambient temperature when the SSD is placed inside a system. The SSD box package is rated up to 60°C.\u003cbr\u003e\u003c\/span\u003e(8) Non-operational storage temperature does not guarantee data retention.\u003cbr\u003e(9) 5 years or Max Endurance (TBW) limit, whichever occurs first. See \u003ca href=\"https:\/\/www.westerndigital.com\/support\" title=\"Western Digital Support Info\"\u003ewdc.com\/support\u003c\/a\u003e for region-specific warranty details.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan style=\"color: rgb(128, 128, 128);\"\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e\u003cstrong\u003eNote: \u003c\/strong\u003e\u003cem\u003eComputers and accessories featured in photos are not included with the product. Product specifications are subject to change without notice.\u003cbr\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"55\" width=\"68\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0847\/8540\/files\/icon-support.png\" alt=\"Support Icon\"\u003e\u003cbr\u003e\u003cstrong\u003ePre-sales Questions?\u003c\/strong\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@sonnettech.com?subject=Sonnet%20Store%20-%20Pre-Sales%20Question\u0026amp;body=Note%20to%20Customer:%20Please%20let%20us%20know%20the%20Sonnet%20product%20you%20are%20considering,%20your%20specific%20computer%20model,%20and%20computer%20OS%20and%20version%20number.\"\u003esales@sonnettech.com\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/www.sonnetstore.com\/pages\/shipping\" title=\"Sonnet Online Store Shipping Policies\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0847\/8540\/files\/icon-advantages-sandisk-support.png?v=1781706904\" alt=\"Sonnet Advantages\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cspan style=\"color: #467fb0;\"\u003e\u003cstrong\u003e\u003cu\u003e\u003cspan class=\"trigger-popup\" style=\"cursor: pointer;\"\u003eWARNING:\u003c\/span\u003e\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e California’s Proposition 65\u003c\/p\u003e","brand":"Sonnet Online Store","offers":[{"title":"Default Title","offer_id":45954852454598,"sku":"WDS400T2X0E","price":539.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/8540\/files\/wd-ssd-4tb-prod-hero_53431384-fb4f-46ee-8a71-4084ea582073.png?v=1781709683","url":"https:\/\/www.sonnetstore.com\/products\/wd_black-sn850x-nvme-ssd-4tb","provider":"Sonnet Online Store - SONNETTECH","version":"1.0","type":"link"}