Samsung 850 PRO 256GB SATAIII 2.5" SSD

QuickFind: 657563 Mfr part code: MZ-7KE256BW
  • Internal Solid State Drive
  • 256GB
  • 2.5"
  • 10 Year Limited Warranty

Product Description

Samsung 850 PRO 256GB SATAIII 2.5" SSD

Boost performance with an industry-leading3D V-NAND SSD

As a professional looking for the highest performing SSD available anywhere, look no further with the Samsung SSD 850 PRO.And if you're a hardcore gaming enthusiast, hold onto your seat, because you'll be amazed at the video performance you'll experience. Designed by, and created for professionals, the 850 PRO won't disappoint.Plus, it's available in a wide range of capacities to suit virtually any need - including 1TB.

The 850 PRO boasts the world's first Vertical NAND (V-NAND) SSD available to the end consumer for use in high-end computing PCs. Whether you're a heavy workload professional or an avid gamer, you'll find that the 850 PRO delivers blazing-fast speeds - the fastest on the market - and the most endurance to ensure it won't let you down when you need it the most. Whatever task you throw at it, it will perform superbly - and do so with more energy efficiency than you ever thought imaginable

Gear up for super-charged performance

Powered by Samsung's cutting-edge 3D V-NAND technology, the NAND flash memory delivers the ultimate in read and write performance in both sequential and random aspects. This is especially impressive in the 128GB model* that outperforms similar models on the market by more than 80MB/s in write speed.

Safeguard precious data without sacrificing performance

When you take your laptop on the road, you not only need to protect your PCs hardware, but your personal data, too. But don't worry.The 850 PRO's Self-Encrypting Drive (SED) technology will help keep it safe, even if you lose your laptop. The drive includes an AES-256-bit hardware-based, full disk encryption engine that secures your data without performance degradation, which is often experienced with software-based encryption.

The 850 PRO's advanced security complies with the Trusted Computing Group (TCG) Opal v2.0 standards, Physical Security ID(PSID), and is compatible with the Microsoft® eDrive Institute of Electrical and Electronics Engineers® (IEEE) 1667 protocol. You can choose from three security features to suit your individual needs. Plus, you can erase or initialize data with the crypto erase service through customer service

Work longer with high-efficiency innovation

Samsung prides itself on its innovations in efficient power management technologies that help you work longer and more productively. The 850 PRO is no exception, boasting the lowest idle power consumption of any SSD, which is extremely important considering that SSDs spend most of their time in idle mode.In fact, the 850 PRO fully supports the sleep mode on the Ultrabook™, consuming only 2m watts of power. Plus, its LPDDR2 cache memory offers higher performance while consuming 30 percent less power when active and 93 percent less power when idle than typical DDR2 or DDR3 memory.

The efficient power management of the 850 PRO saves up to 40 percent more power than the 840 PRO because the 3D V-NAND consumes half that of a 2D planar NAND and is among the lowest in active write power consumption.

Samsung MZ-7KE256BW SSD 850 PRO 2.5" SATA III
The Samsung 850 PRO SSD redefines storage with the world’s first drive based on 3D VNAND flash, offering exceptional read/write performance, reliability and power management efficiency. The 850 Pro delivers up to 2x the speed, density and endurance of conventional flash.
Ultimate Read/Write Performance
Samsung’s 850 PRO, the world’s first 32 layer 3D V-NAND, provides up to 100K IOPS Random Read Speed and 470 MB/s Sequential Write speed and the option of enabling Samsung RAPID mode, which can kick up to even higher speeds. With up to 2x the speed and density of conventional 2D flash, you get the most speed available for gaming and real world performance
Enhanced Endurance and Reliability
With an industry-leading 10 year, 150 TBW warranty, the 850 PRO offers unbeatable reliability. When combined with the 850 PRO’s 256-bit AES Self-Encrypting Drive (SED) security technology, you can rely on your files being secure and available whenever you need them.
Efficient Power Management
Featuring a 4th generation MEX Controller, the 850 PRO offers one of the most energy-efficient drives on the market, using up to 50% less power than traditional hard drives. It has the lowest active write power consumption and supports device sleep mode, which lowers power consumption to under 2mW.
2.5" SATA III Solid State Drive
Environmental Specs
Dimensions (W x H x D)
3.94" x 2.75" x 0.27"
Max 0.002 lb.
10 Year Limited

Technical Specification

Samsung 850 PRO 256GB SATAIII 2.5" SSD


Features Hardware Full Disk Encryption (FDE), TRIM support, Automatic Garbage Collection, DevSleep mode, Samsung 3-core MEX Controller, Microsoft eDrive compatible, 3D V-NAND Technology, Dynamic Thermal Guard protection, RAPID mode support, Low Power DDR2 SDRAM Cache, S.M.A.R.T., 256-bit AES, IEEE 1667
Weight 66 g
Device Type Solid state drive - internal
Capacity 256 GB
Hardware Encryption Yes
NAND Flash Memory Type Multi-level cell (MLC)
Form Factor 2.5"
Interface SATA 6Gb/s
Buffer Size 512 MB
Width 69.85 mm
Depth 100 mm
Height 6.86 mm


4KB Random Read 100000 IOPS
4KB Random Write 90000 IOPS
SSD Endurance 150 TB
Drive Transfer Rate 600 MBps (external)
Internal Data Rate 550 MBps (read) / 520 MBps (write)
Maximum 4KB Random Write 90000 IOPS

Expansion & Connectivity

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


Power Consumption 3.5 Watt (active) ¦ 50 mW (idle) ¦ 2 mW (sleep)

Manufacturer Warranty

Service & Support Limited warranty - 10 years
Service & Support Details Limited warranty - 10 years


MTBF 2,000,000 hours

Software & System Requirements

Software Included Drivers & Utilities, Samsung Magician Software, Samsung Smart Migration Software, Samsung Drive Manager

Environmental Parameters

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

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Samsung 850 PRO 256GB SATAIII 2.5" SSD

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Samsung 850 PRO 256GB SATAIII 2.5" SSD

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Add-ons and Accessories


Corsair SSD Mounting Bracket

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2.5" to 3.5" SSD Mounting Bracket

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StarTech SATA Cables

StarTech 18 inch/45cm SATA Serial ATA Cable

£6.30 inc. vat
£5.25 ex. vat

StarTech SATA Extension Cable - 30cm

£5.07 inc. vat
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