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  • Description
  • Specifications
  • Downloads
  • Western Digital Black SN850X 4 TB NVMe™ M.2 SSD Without Heatsink

    WDS400T2X0E

    Built for elite gaming.
    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 8TB2, this gaming drive is built for top-tier performance. With 7,300MB/s1 speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable WD_BLACK 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.
     
    Gain the Ultimate Gaming Edge
    Insane speeds up to 7,300 MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times — for the elite gaming experience you’ve been waiting for.
     
    Heatsink for the Win
    All capacities have an optional heatsink version that's not only eye-catching, but also helps your rig maintain peak performance through your most intense gaming sessions.
     
    More Room for More Games
    Capacities up to 8TB2 built with Western Digital TLC 3D NAND, means you get to keep more games at the ready — and get into the action even faster.
     
    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 features
    The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management5.
     
    DirectStorage Supported
    Improve load times and get precious time back with Microsoft® DirectStorage technology.

  • Full Specifications
    Features Get top-tier performance and ridiculously short load times for your gaming PC or workstation
    High capacities built with Western Digital TLC 3D NAND so you get to download more games
    Optional heatsink version to help maintain peak performance through your most intense gaming sessions
    Capacity 4 TB
    Form Factor M.2 2280
    Connector M.2
    Compatibility Windows® 10+, PlayStation®5 (Heatsink model only), Computer with M.2 (M-key) port, capable of taking M.2 2280 form factor
    Sequential Read Performance 7300MB/s
    Sequential Write Performance 6600MB/s
    Random Read 1200K IOPS
    Random Write 1100K IOPS
    Interface PCIe Gen4 x4
    Warranty 5-Year Limited Warranty
    Endurance (TBW) 2400
    Dimensions (L x W x H) 80mm x 22mm x 2.38mm
    Weight 7.5gms
    Model Number WDS400T2X0E
    Operating Temperature 0°C to 85°C
    Non-Operating Temperature -40°C to 85°C
    Certifications BSMI, CAN ICES-3(B)/NMB-3(B), CE, FCC, KCC, Morocco, RCM, TUV, UL, VCCI
  • Description Downloads
    Western Digital Black SN850X 4 TB NVMe™ M.2 SSD Without Heatsink | WDS400T2X0E DataSheet Download
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    February 26, 2026

    Digital Menu Boards & High-Brightness Display for Karak Chaii, Southall

    HOSPITALITY • DIGITAL MENU BOARDS
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    Digital Signage & Installation Service for A MANO, Orpington

    RETAIL • Digital Signage
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    HOSPITALITY • DIGITAL MENU BOARDS
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    Client
    Woodys
    Location
    Andover
    Sector
    Hospitality, QSR
    Installation Date
    February 2025
    Solution
    Digital Menu Boards + CMS
    Products
    43" Digital Menu Boards
  • Digital Signage & Freestanding Display for Naan Staap, Leicester
    January 14, 2026

    Digital Signage & Freestanding Display for Naan Staap, Leicester

    HOSPITALITY • DIGITAL MENU BOARDS
    Multi-screen digital menu boards and floor-to-ceiling ultra-high-brightness window display installed for Naan Staap in Leicester, delivering clear menus and strong street-level visibility impact.
    Client
    Naan Staap
    Location
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    Sector
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    Installation Date
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