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Rectangular 2.5 inch silver metal SSD with label and SATA connectors

SAMSUNG

SAMSUNG 850 PRO MZ-7KE256BW 2.5" 256GB SATA internal SSD

SKU CH-FF2D-REZCC

A 2.5" 256 GB SATA internal SSD with 3D V-NAND delivering up to 550 MB/s read and 520 MB/s write

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form Factor2.5"
  • Capacity256GB
  • Memory Components3-D Vertical
  • InterfaceSATA III
  • 3D V-NAND enables up to 550 MBps sequential read
  • Samsung MEX controller delivers up to 520 MBps sequential write
  • 100,000 IOPS random read for responsive multitasking
  • 2,000,000 hour MTBF supports long-term reliability
  • 5W idle power reduces system energy draw

Samsung 850 PRO 256GB SATA SSD

The Samsung 850 PRO is a 2.5-inch internal solid state drive with 256GB capacity. It uses 3-D Vertical NAND and a Samsung MEX controller for consumer workloads. The SATA III interface fits standard laptop and desktop drive bays.

2.5-inch form factor with 7mm height

At 7.00mm high, 70.10mm wide and 100.08mm deep, the drive matches the common 2.5-inch sled used in most notebooks and desktops. It weighs 0.14 lb and draws 0.5W idle or 3.5W active. Operating range is 0°C to 70°C at 0% to 95% humidity.

Sequential read up to 550 MBps

Maximum sequential read reaches 550 MBps and sequential write reaches 520 MBps. Random 4KB performance is rated at 100000 IOPS read and 90000 IOPS write. MTBF is 2000000 hours, reflecting the endurance of the 3D V-NAND design.

Highlights

  • 3D V-NAND enables up to 550 MBps sequential read
  • Samsung MEX controller delivers up to 520 MBps sequential write
  • 100,000 IOPS random read for responsive multitasking
  • 2,000,000 hour MTBF supports long-term reliability
  • 5W idle power reduces system energy draw

Specifications

BrandSAMSUNG
Series850 PRO
ModelMZ-7KE256BW
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form Factor2.5"
Capacity256GB
Memory Components3-D Vertical
InterfaceSATA III
ControllerSamsung MEX Controller
Max Sequential ReadUp to 550 MBps
Max Sequential WriteUp to 520 MBps
4KB Random ReadUp to 100,000 IOPS
4KB Random WriteUp to 90,000 IOPS
MTBF2,000,000 hours
FeaturesThe World's First Consumer 3D V-NAND SSD
Ultimate Read/Write Performance
Enhanced Endurance and Reliability
Efficient Power Management
Power Consumption (Idle)0.5W
Power Consumption (Active)3.5W
Operating Temperature0°C ~ +70°C
Operating Humidity0% to 95%
Height7.00mm
Width70.10mm
Depth100.08mm
Weight0.14 lb.

Questions about this item

Does the SATA III interface on the Samsung 850 PRO MZ-7KE256BW cap real-world throughput at 550 MBps read and 520 MBps write?

Yes, the SATA III link and the Samsung MEX controller limit sequential speeds to 550 MBps read and 520 MBps write, so sustained transfers will not exceed those figures.

What physical space does the 2.5 inch drive with 7.00 mm height require to fit?

It needs a standard 2.5 inch bay or caddy that accepts a 7.00 mm z-height, 70.10 mm width and 100.08 mm depth.

How is the drive installed and which step is often missed?

Connect the SATA data and power cables, secure the drive with four screws, then initialise and format the 256 GB volume in the operating system before use.

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