Samsung 840 PRO 256GB SSD

Samsung 840 PRO 256GB 2.5" SATA3 MZ-7PD256BW

Samsung 840 PRO 256GB 2.5" SATA3 MZ-7PD256BW

(235 reviews)
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  • Experience PC performance you never thought possible Enables you to boot up your computer in as little as 15 seconds Energy efficient - improves battery life by up to 50 minutes Solid-state design provides greater shock protection for data and brushed metal case blocks dust and corrosion Worry-free data security with AES 256-bit full-disk encryption 100-percent genuine Samsung components from the #1 memory manufacturer in the world 4th-generation 3-Core Samsung MDX Controller ensures sustained performance under the most punishing conditions Backed by an industry-leading five-year limited warranty

Specifications Overview

Model MZ-7PD256BW
Release Date October 2012

* First availability for purchase, it may not correspond to the actual market launch date.

Series 840 Pro Series
Capacity 256 GB
Interface SATA 6 Gb/s
Form Factor 2.5"
SSD Controller Samsung MDX
NAND Flash Type MLC
MTBF 1,500,000 hours


  • Great performance
  • Samsung MDX controller
  • 5-years warranty


Samsung 840 PRO 256GB Performance comparison with similar Solid State Drives

(Higher is better)

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Sequential read/write speed, Random 4K read/write speed

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Product Type Solid State Drive
Design 2.5" 7mm (Ultraslim) Form Factor
Series 840 PRO
Capacity 256GB
Sequential Read Speed Up to 540MB/s
Sequential Write Speed Up to 520MB/s
Random Read Speed Up to 100K IOPS
Random Write Speed Up to 90K IOPS
Power Consumption (W) .15W
Voltage 5V ± 5%
Operating Systems
Compatible Windows Vista or Later
Environmental Specs
Operating Temperature 32ᵒF to 140ᵒF
Product .15 lb
Product 3 Years
Product Contents
Contents Samsung SmartMigration Software, Samsung Software & Manual CD, Quick User Manual

Expert reviews


At the start of this review we set out to see what one of the industry's leading high-end client drives would do in enterprise workloads due to its popularity in that segment. It's important to understand the expectations and needs for a drive in the...


Read the full review

While our review of the Samsung 840 Pro may be a bit late but with updated NAND, additional features and being rolled out in the last few months, this is almost a brand new drive. And what an SSD it is. Despite boasting an internal architecture whose...

Hardware Canucks

Read the full review

While the Samsung 830 SSD and many of its year-old peers may still be attractive, Samsung is ready to move on to bigger and better things. The new flagship offering, the SSD 840 Pro, refines the 830 Series' firmware with faster random...

Compare Samsung 840 PRO 256GB with similar Solid State Drives

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