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Samsung 840 Pro 2.5 inch 256GB SATA internal SSD silver metal casing

SAMSUNG

SAMSUNG 840 Pro 2.5" 256GB SATA internal SSD MZ-7PD256BW

SKU CH-ZFSZ-RV6P1 MPN MZ-7PD256BW

2.5" internal SSD with 256GB MLC storage delivering 540 MB/s read and 520 MB/s write speeds over SATA

  • Total capacity256 GB
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Intended useConsumer
  • NAND flash typeMLC

Capacity 256GB

  • Fast boot in as little as 15 seconds
  • Sustained 540 MB/s sequential read speed
  • Up to 100,000 IOPS random read performance
  • MLC memory with 1,500,000-hour MTBF reliability
  • Low 0.054 W idle power extends battery life by up to 50 minutes

Pro series SSD for consumers

The Samsung 840 Pro MZ-7PD256BW is a 2.5 inch internal solid state drive built for consumer PCs. It uses MLC memory and a Samsung MDX controller to deliver consistent speed across all data types. The SATA III interface fits standard drive bays and motherboard ports.

Fits 2.5 inch bays and SATA ports

The drive measures 7.00mm high and connects through a SATA 600 interface, so it slots into any 2.5 inch bay with a matching data cable. Idle power draw is 0.054W and active draw is 0.069W, which helps extend laptop battery life by up to 50 minutes. No extra power adapter or heatsink is required.

256GB capacity with sustained speeds

Sequential reads reach 540 MB/s and writes reach 520 MB/s, while random 4KB performance hits 100,000 IOPS read and 90,000 IOPS write. The 256GB volume holds the operating system, core applications and active project files. Heavy media libraries or large game collections will need a secondary drive.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $193.99
Typical for this category: the median of 1,994 items is $180.49.
Total capacity 256 GB
Lower than about 80% of the 1,368 comparable items (median 1 TB).
Price per TB $757.77 per TB
Pricier than about 90% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSAMSUNG
Product line840 Pro Series
Model nameMZ-7PD256BW
Total capacity256 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sustained sequential read rate540 MB/s
Sustained sequential write rate520 MB/s
Random read (4K)Up to 100,000 IOPS
Random write (4K)Up to 90,000 IOPS
Storage
NAND flash typeMLC
Controller chipSamsung MDX Controller
Ports & slots
Interface typeSATA III
Power
Idle power draw0.054 W
Active power draw0.069 W
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Shipping weight0.12 kg
Package size145 × 140 × 20 mm
More details
Mean time between failures1,500,000 h

Other versions of this model

1 more in the same range

Questions about this item

At what sustained write speed does the drive begin to throttle under continuous load?

The Samsung MDX controller maintains the rated 520 MB/s sequential write speed throughout heavy workloads without throttling.

How much power does the SSD draw and how hot does it get when running all day?

Active power draw is 0.069 W and idle draw is 0.054 W, so heat output remains very low during continuous operation.

Which host interface and form factor must my laptop or desktop already provide for this drive to work?

The system needs a standard 2.5-inch SATA III bay with a 7 mm height clearance.

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