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SAMSUNG

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

SKU CH-S1X7-6G0AP

A 2.5-inch SATA internal SSD with 120GB capacity, 540MB/s read and 410MB/s write speeds

  • Total capacity120 GB
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • NAND flash typeTLC
  • Controller chipSamsung MEX
  • Fast boot and load times with 540MB/s sequential read
  • Responsive multitasking from 94,000 IOPS random read
  • Quick file saves at 410MB/s sequential write
  • Low idle draw of 0.045W cuts system power use
  • High endurance rated at 1,500,000 hours MTBF

Samsung 840 EVO 120GB SATA SSD

The Samsung 840 EVO is a 2.5-inch internal solid state drive with a 120GB capacity and a SATA III interface. It uses TLC memory and a Samsung MEX controller to deliver sustained sequential reads up to 540MB/s and writes up to 410MB/s. Random 4KB performance reaches 94,000 IOPS read and 35,000 IOPS write. The drive measures 7.11mm in height and 69.85mm in width.

Upgrading from a mechanical hard drive

Replacing a traditional hard drive with this SSD removes the mechanical latency that slows boot times and application launches. The jump is most noticeable when moving an operating system and frequently used programs onto the drive. For users storing large media libraries, the 120GB capacity may require a secondary drive for bulk data.

Simple 2.5-inch SATA installation

Installation follows the standard 2.5-inch SATA process: connect the drive to a free SATA data port and a SATA power connector, then secure it in a drive bay or bracket. The low 0.045W idle power draw reduces strain on the power supply. Common issues include forgetting to enable AHCI mode in the BIOS or leaving the drive uninitialised in the operating system disk manager.

How it compares

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

Price $55.99
Cheaper than about 88% 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 $466.58 per TB
Pricier than about 85% 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
Part numberMZ-7TE120BW
Total capacity120 GB
Product typeInternal Solid State Drive (SSD)
Performance
Sustained sequential read rate540 MB/s
Sustained sequential write rate410 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)
Environment & compliance
Operating temperature range0 °C to 60 °C
Operating humidity range5% to 95% RH
More details
Mean time between failures1,500,000 h

Questions about this item

Will the 7.11 mm height fit my laptop 2.5 inch bay?

The drive is 7.11 mm tall and 69.85 mm wide, matching the standard 2.5 inch SATA form factor used in most laptops and desktops.

How do I install the MZ-7TE120BW and what step is often missed?

Connect the SATA data and power cables, secure the drive with four screws, then initialise and format the 120 GB volume in your OS before use.

When will the TLC NAND on this 840 EVO need replacement?

With a 1.5 million hour MTBF and 0.045 W idle power, the drive is rated for many years of typical client workloads before wear-out.

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