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Rectangular 2.5 inch silver metal drive with label showing Samsung 840 Series 250GB

SAMSUNG

SAMSUNG 840 Series 250GB SATA Internal SSD MZ-7TD250BW

SKU CH-W9WZ-RHT6K MPN MZ-7TD250BW

2.5" SATA internal SSD with 250GB TLC storage, 530 MB/s read and 240 MB/s write speeds

  • Total capacity250 GB
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Intended useConsumer
  • NAND flash typeTLC

Capacity 250GB

  • Sequential reads reach 530 MB/s for fast boot and load times
  • Sequential writes hit 240 MB/s to move large files quickly
  • Random read IOPS up to 95,000 keep multitasking responsive
  • AES encryption and TRIM support protect data and maintain performance
  • Low 0.046 W idle power extends laptop battery life

840 Series 250GB SATA drive

The SAMSUNG 840 Series MZ-7TD250BW is a 2.5" internal solid state drive built for consumer desktops and laptops. It provides 250GB of storage using TLC memory and a Samsung controller. The SATA III interface fits standard drive bays and caddies without adapters. It suits everyday workloads such as operating system, applications and media libraries.

Low power draw and silent operation

Idle power measures .046W and active power .071W, so the drive adds minimal heat to a chassis. With no moving parts it runs silently in normal use. The low thermal output means small form factor builds stay cool without extra airflow. Power draw stays well below one watt during typical read and write activity.

7mm height fits slim bays and AES support

A 7.00mm profile allows installation in ultrabooks and compact desktops that reject taller drives. TRIM support keeps performance steady over time. AES encryption protects stored data without software overhead. RAID support lets the drive join arrays for redundancy or speed. The lightweight .3 construction eases handling during upgrades.

How it compares

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

Price $143.99
Cheaper than about 60% of the 1,994 comparable items (median $180.49).
Total capacity 250 GB
Lower than about 84% of the 1,368 comparable items (median 1 TB).
Price per TB $575.96 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 Series
Model nameMZ-7TD250BW
Total capacity250 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sustained sequential read rate530 MB/s
Sustained sequential write rate240 MB/s
Random read (4K)Up to 95,000 IOPS
Random write (4K)Up to 44,000 IOPS
Storage
NAND flash typeTLC
Controller chipSamsung
MDX
Controller
Ports & slots
Interface typeSATA III
Power
Idle power draw0.046 W
Active power draw0.071 W
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Shipping weight0.11 kg
Package size145 × 142 × 20 mm
More details
Mean time between failures1,500,000 h

Other versions of this model

2 more in the same range

Questions about this item

How do I install the 2.5" 840 Series drive and which step is often missed?

Mount the 7.00mm high drive in a 2.5" bay, connect the SATA data and power cables, then enable TRIM in the operating system so the Samsung MDX controller can maintain performance.

What maintenance or replacement will the 250GB TLC SSD need later?

The drive has no moving parts and requires no routine maintenance; monitor health via SMART and replace the unit if the 1,500,000 hour MTBF rating is approached or errors appear.

What limit appears first during sustained writes on this SATA III model?

Sequential write speed is rated at 240MBps, so extended large-file transfers will hit that throughput ceiling before the 530 MB/s read limit or the 44,000 IOPS random write figure.

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