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850 EVO SATA III 2.5inch SSD 4TB

  • Samsung V-NAND technology
  • Up to 540MB/s sequential read and 520MB/s write
  • 5-year limited warranty

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Mfr part code: MZ-75E4T0B/EU

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    850 EVO SATA III 2.5inch SSD 4TB Product Description

    Untap your computer's potential

    The Samsung SSD 850 EVO elevates the everyday computing experience to a higher level of performance and endurance than was ever imagined. Powered by Samsung's unmatched V-NAND technology, no wonder the 850 EVO is the best-selling SSD for everyday computing. Designed for mainstream desktop PCs and laptops, the 850 EVO comes in a wide range of capacities and form factors.

    Uncompromised performance

    The 850 EVO optimizes performance for your daily computing tasks, boasting sequential write speeds up to 520 MB/s with TurboWrite technology and sequential read speeds up to 540 MB/s. Plus, RAPID mode further boosts performance for up to 2x faster data processing speeds on a system level by utilizing unused PC memory as cache storage.

    Guaranteed endurance and reliability

    The Samsung 850 EVO maintains high performance and enhanced endurance, and provides a limited warranty of 5 years or 75 to 300 terabytes written (TBW). For security, the 850 EVO is equipped with an AES 256-bit hardware-based encryption engine which does not cause any performance degradation and is compliant with advanced security management solutions, such as IEEE® 1667 and TCG™ Opal. Plus, Dynamic Thermal Guard protects it from overheating.

    Capacities range up to 4 TB

    More variety gives you more options that are just right for your needs. Samsung offers the 850 EVO in a full range of capacities up to 4 TB - the industry's first 4 TB SSD for client PCs, which enables you to store more data on a single SSD.

    Multiple form factors for almost any need

    Samsung has designed the 850 EVO in multiple form factors to fit a variety of computers. You may choose among the 2.5-inch size for desktop PCs and laptops, and the SATA-based M.2 or the mSATA for ultra-slim computing applications.

    - SATA 6Gb/s SSD for Client PCs
    - 2.5 inch form factor
    - Samsung V-NAND 3bit MLC
    - Samsung Magician Software for SSD
    - Samsung Data Migration Software

    V-NAND Technology and THE

    Samsung's unique and innovative V-NAND
    flash memory architecture is a breakthrough
    in overcoming the density limitations,
    performance and endurance of today's
    conventional planar NAND architecture. VNAND
    is fabricated by stacking cell layers
    vertically over one another rather than
    decreasing the cells dimensions and trying
    to fit itself onto a fixed horizontal space
    resulting in higher density and better
    performance utilizing a smaller footprint.
    The 850 EVO is the advanced consumer
    SSD powered by V-NAND technology that
    maximizes everyday computing experiences
    with optimized performance and enhanced
    Optimized performance for
    everyday computing
    Powered by Samsung's cutting-edge V-NAND
    technology, 850 EVO delivers top-class
    sequential and random read and write
    performance to optimize everyday computing.
    With improved performance thanks to
    TurboWrite technology the 850 EVO provides
    not only more than a 10% better user
    experience than 840 EVO but up to 1.9x faster
    random write speeds for the 120/250 GB
    models as well. In fact, the 850 EVO delivers
    top class sequential read (540 MB/s) and write
    (520 MB/s) performance in all capacities. This
    comes with optimized random read and write
    performance on all QD and improved QD1 and
    QD2 random performance for Client PC usage.
    Samsung SSD 850 EVO
    Data Sheet, Rev.3.1 (May, 2016)

    Rev. 3.1, May, 2016
    Reinforcement of TurboWrite
    In the early stages of the 840 EVO, Samsung
    adopted sequential write performance first.
    With TurboWrite, write speeds are significantly
    accelerated during data transfers by creating a
    high-performance write buffer in the SSD. If a
    consecutive write operation (i.e. no idle time)
    exceeds the size of the buffer, the transfer will
    exit TurboWrite and be processed at "After
    TurboWrite" speeds. Once the buffer is cleared,
    TurboWrite performance will resume. However,
    the buffer size for TurboWrite is more than
    sufficient for everyday PC use, and you should
    experience accelerated speeds for most
    For the 850 EVO, enhanced TurboWrite
    technology applied to random write speeds up
    to 1.9x faster for the 120 GB model and 1.25x
    faster for the 250GB model over the 840 EVO.
    Guaranteed endurance and
    reliability for maximum use
    Guaranteed endurance
    The 850 EVO delivers guaranteed endurance
    and reliability by doubling the Tera bytes
    Written(TBW) compared to the previous
    generation 840 EVO backed by an industry
    leading 5 year warranty.
    With twice the endurance of a typical NAND
    flash SSD, the 850 EVO will keep working as
    long as you do. The 850 EVO guarantees a 5
    year limited warranty or 75TBW for 120GB,
    250GB, 150TBW for 500GB, 1TB and 300TBW
    for 2TB and 4TB.
    Enhanced reliability with improved
    sustained performance
    With enhanced reliability through improved
    sustained performance, the 850 EVO assures
    long-term dependable performance up to 30%
    longer than the 840 EVO with minimized
    performance degradation. This means you can
    use it every day when taking care of work or
    entertaining yourself knowing it will keep
    performing even with heavy daily workloads
    over the years.
    Advanced data encryption
    The 850 EVO provides the same data
    encryption feature as the 840 EVO does. Self-
    Encrypting Drive (SED) security technology
    will help keep data safe at all times. It includes
    an AES 256-bit hardware-based encryption
    engine to ensure that your personal files
    remain secure. Being hardware-based, the
    encryption engine secures your data without
    performance degradation that you may
    experience with a software-based encryption.
    Also, 850 EVO is compliant with advanced
    security management solutions (TCG Opal and
    IEEE 1667). Magician will guide "How to use
    security features". Furthermore, you can erase
    or initialize data with the crypto erase service
    with PSID.
    Efficient power management
    for all PC applications
    Power consumption affects everyone. You
    actually save of up to 50% more on power than
    with the 840 EVO during write operations
    thanks to V-NAND consuming half the power
    of 2D planar NAND.
    Plus, whether it's preserving battery life for
    longer cordless use or just saving on costs,
    power management is important. Device sleep
    signals the SSD to enter a low power state
    which is vital for ultra-books and other battery
    powered devices. With 850 EVO's Device Sleep
    at a highly efficient 2mW you get longer
    battery life on your notebook thanks to a
    controller optimized for V-NAND. With the 850
    EVO you can work and play longer without
    having to plug in.
    Rev. 3.1, May, 2016
    Technical Specifications
    Samsung SSD 850 EVO
    Usage Application Client PCs
    Capacity 120GB, 250GB, 500GB, 1TB(1,000GB), 2TB(2,000GB), 4TB(4,000GB)
    Dimensions (LxWxH) 100 x 69.85 x 6.8 (mm)
    Interface SATA 6Gb/s (compatible with SATA 3Gb/s and SATA 1.5Gb/s)
    Form Factor 2.5 inch
    Samsung MGX controller(120GB, 250GB, 500GB & 1TB)
    Samsung MHX controller (2TB & 4TB)
    NAND Flash Memory Samsung V-NAND 3bit MLC
    DRAM Cache Memory
    256MB(120GB) or 512MB(250GB&500GB) or
    1GB(1TB) or 2GB(2TB) or 4GB(4TB) LPDDR3 DRAM Cache Memory
    Sequential Read: Max. 540 MB/s
    Sequential Write**: Max. 520 MB/s
    4KB Random Read (QD1): Max. 10,000 IOPS
    4KB Random Write(QD1):
    Max. 40,000 IOPS(250GB/500GB/1TB/2TB/4TB)
    Max. 38,000 IOPS(120GB)
    4KB Random Read(QD32):
    Max. 98,000 IOPS(500GB/1TB/2TB/4TB)
    Max. 97,000 IOPS(250GB)
    Max. 94,000 IOPS(120GB)
    4KB Random Write(QD32):
    Max. 90,000 IOPS(500GB/1TB/2TB/4TB)
    Max. 88,000 IOPS(120GB/250GB)
    Data Security AES 256-bit Full Disk Encryption, TCG/Opal V2.0, Encrypted Drive(IEEE1667)
    Weight Max. 55g
    Reliability MTBF: 1.5 million hours
    120/250GB: 75TBW
    500GB/1TB: 150TBW
    2TB/4TB: 300 TBW
    Power Consumption***
    Active Read/Write (Average): Max. 3.1W(4TB) / Max. 3.6W(4TB)
    Idle: Max. 70mW(4TB)
    Device Sleep(Typ.): 2mW(120/250/500GB), 4mW(1TB), 5mW(2TB), 10mW(4TB)
    Supporting features TRIM(Required OS support), Garbage Collection, S.M.A.R.T
    Temperature Operating:
    0°C to 70°C
    -40°C to 85°C
    Humidity 5% to 95%, non-condensing
    Vibration Non-Operating: 20~2000Hz, 20G
    Shock Non-Operating: 1500G , duration 0.5m sec, 3 axis
    Warranty 5 years limited


    Add-ons and Accessories


    £6.00 inc. vat
    £5.00 ex. vat
    £7.04 inc. vat
    £5.86 ex. vat

    Technical Specifications


    Device Type Solid state drive - internal
    Capacity 4 TB
    Hardware Encryption Yes
    Encryption Algorithm 256-bit AES
    NAND Flash Memory Type Multi-level cell (MLC)
    Form Factor 2.5"
    Interface SATA 6Gb/s
    Buffer Size 4 GB
    Features Hardware Full Disk Encryption (FDE), TRIM support, Garbage Collection technology, DRAM cache, TurboWrite Technology, Samsung MHX Controller, V-NAND Technology, S.M.A.R.T., 256-bit AES, IEEE 1667
    Width 69.85 mm
    Depth 100 mm
    Height 6.8 mm
    Weight 55 g


    SSD Endurance 300 TB
    Drive Transfer Rate 600 MBps (external)
    Internal Data Rate 540 MBps (read) / 520 MBps (write)
    Maximum 4KB Random Write 90000 IOPS
    Maximum 4KB Random Read 98000 IOPS


    MTBF 1,500,000 hours

    Expansion & Connectivity

    Interfaces 1 x SATA 6 Gb/s - 7 pin Serial ATA
    Compatible Bay 2.5"


    Power Consumption 3.1 Watt (read) ¦ 3.6 Watt (write) ¦ 70 mW (idle) ¦ 10 mW (sleep)

    Software & System Requirements

    Software Included Drivers & Utilities, Samsung Magician Software, Samsung Data Migration


    Compliant Standards IEEE 1667

    Manufacturer Warranty

    Service & Support Limited warranty - 5 years

    Environmental Parameters

    Min Operating Temperature 0 °C
    Max Operating Temperature 70 °C
    Humidity Range Operating 5 - 95% (non-condensing)
    Shock Tolerance (non-operating) 1500 g @ 0.5 ms
    Vibration Tolerance (non-operating) 20 g @ 20-2000 Hz

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