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Rectangular 2.5 inch black metal internal SSD with label showing Samsung 840 Series 120GB SATA

SAMSUNG

SAMSUNG 840 Series 120GB 2.5" SATA internal SSD MZ-7TD120BW

SKU CH-263D-Y30S0 MPN MZ-7TD120BW

A 2.5 inch SATA internal solid state drive with 120GB capacity, 530 MB/s sequential read and 130 MB/s sequential write speeds

  • Total capacity120 GB
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Intended useConsumer
  • Controller chipSamsung MDX Controller

Capacity 120GB

  • Fast boot and load times from 530 MB/s sequential read
  • Responsive multitasking with up to 85000 IOPS random read
  • Low power draw of .15W extends laptop battery life
  • Data protected by AES encryption and Trim support
  • Reliable operation backed by 1500000 hours MTBF

Samsung 840 Series 120GB SATA SSD

The Samsung 840 Series 120GB is a 2.5 inch internal solid state drive built for consumer desktops and laptops. It uses a Samsung MDX controller and a SATA III interface to deliver sequential read speeds of 530 MB/s and write speeds of 130MBps. The drive is suited for everyday computing, operating system installs and general storage upgrades.

Check SATA port and 7mm bay clearance

Verify that your motherboard or laptop provides a free SATA III port and a standard 2.5 inch drive bay with 7.00mm height clearance. The drive draws 0.15W typical power so a regular SATA power connector is sufficient. Confirm the system BIOS recognises SATA SSDs and enable AHCI mode for best performance.

Metal casing with Trim and AES support

The 7.00mm metal enclosure fits tight notebook bays and standard desktop trays without adapters. Built-in Trim support maintains write performance over time while AES hardware encryption secures data at rest. A 1,500,000 hour MTBF rating and 32,000 IOPS random write figure indicate consistent reliability for daily workloads.

How it compares

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

Price $87.99
Cheaper than about 76% of the 1,994 comparable items (median $180.49).
Total capacity 120 GB
Lower than about 95% of the 1,368 comparable items (median 1 TB).
Price per TB $733.25 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-7TD120BW
Total capacity120 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sustained sequential read rate530 MB/s
Sustained sequential write rate130 MB/s
Random read (4K)Up to 85,000 IOPS
Random write (4K)Up to 32,000 IOPS
Storage
Controller chipSamsung
MDX
Controller
Ports & slots
Interface typeSATA III
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Shipping weight0.11 kg
Package size145 × 142 × 18 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

Does the 2.5" SATA III 120GB drive ship with a mounting bracket or cable, or must I buy them separately?

The drive is supplied as the bare 2.5" SATA III unit only; mounting brackets and data cables are not included and must be purchased separately if your chassis or laptop requires them.

The 840 Series lists only a 120GB capacity — is that the sole option for this model?

Yes, the MZ-7TD120BW is offered in a single 120GB capacity; there are no other capacities for this specific model number.

What does the 530 MB/s sequential read figure mean when the drive is installed in a laptop?

The 530 MB/s sequential read is the sustained maximum over the SATA III link; real-world boot and application load times will be lower but still far faster than a mechanical hard drive.

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