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Rectangular 2.5 inch SSD with black metal casing and label showing model MZ-7TE120BW

SAMSUNG

SAMSUNG 840 EVO MZ-7TE120BW 120GB 2.5 SATA internal SSD

SKU CH-W7TD-WB91J MPN MZ-7TE120BW

A 120GB 2.5" SATA internal SSD delivering up to 540 MBps read and 410 MBps write speeds

  • Total capacity120 GB
  • Sequential read speedUp to 540 MB/s
  • Sequential write speedUp to 410 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Capacity 120GB

  • Faster boot and load times with sequential read up to 540 MBps
  • Responsive multitasking from random read up to 94000 IOPS
  • Quick file saves backed by sequential write up to 410 MBps
  • Low idle draw of 0.045W keeps system cool and efficient
  • Proven reliability with 1500000-hour MTBF rating

Samsung 840 EVO 120GB SATA SSD

The Samsung 840 EVO MZ-7TE120BW is a 120GB internal solid state drive built for everyday computing. It uses a 2.5 inch form factor and a SATA interface to replace mechanical hard drives in laptops and desktops. The drive suits users who want faster boot times and application loading without changing platform infrastructure.

Fits standard 2.5 inch SATA bays

The drive slots into any 2.5 inch bay with a SATA III connection and requires no additional drivers or cables beyond the standard data and power leads. Its 7.11mm height matches typical laptop caddies and desktop brackets. Low idle power draw of 0.045W helps extend battery life in portable systems while freeing thermal headroom for other components.

120GB capacity for OS and core apps

The 120GB TLC volume comfortably holds an operating system, core productivity suite and a handful of frequently used programs. Sequential reads up to 540 MBps and writes up to 410 MBps keep file transfers responsive. Random performance reaches 94,000 read IOPS and 35,000 write IOPS. Heavy media libraries or large game collections will exceed the available space and require secondary storage.

How it compares

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

Price $138.99
Cheaper than about 61% 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).
Sequential read speed Up to 540 MB/s
Lower than about 83% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $1,158.25 per TB
Pricier than about 91% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameSAMSUNG
Product line840 EVO
Model nameMZ-7TE120BW
Total capacity120 GB
Product typeInternal Solid State Drive (SSD)
Performance
Sequential read speedUp to 540 MB/s
Sequential write speedUp to 410 MB/s
Random read (4K)Up to 94,000 IOPS
Random write (4K)Up to 35,000 IOPS
Storage
NAND flash typeTLC
Controller chipSamsung MEX
Ports & slots
Interface typeSATA III
Power
Idle power draw0.045 W
Size & build
Form factor2.5 in (6.35 cm)
Overall height7.11 mm
Overall width69.85 mm
Product depth100.08 mm
Product weight0.12 lb (0.05 kg)
Shipping weight0.12 kg
Package size145 × 142 × 18 mm
Environment & compliance
Operating temperature range0 °C to 60 °C
Operating humidity range5% to 95% RH
More details
Mean time between failures1,500,000 h

Other versions of this model

3 more in the same range

Questions about this item

How much sequential write speed drops when the 120GB TLC drive fills up?

The 120GB TLC NAND and Samsung MEX controller deliver up to 410 MBps sequential write when free space is available; sustained writes slow once the SLC cache is exhausted.

What heat or noise should I expect from the 2.5 inch SATA SSD running all day?

Idle power is 0.045W and the drive has no moving parts, so it produces no audible noise and negligible heat within the 0°C to 60°C operating range.

Which SATA cable and power connector must my motherboard or laptop already have for this 2.5 inch drive?

A standard SATA III data cable and a 15-pin SATA power connector are required; the 7.11mm height fits most 2.5 inch bays.

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