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A silver 2.5 inch internal SSD with a brushed metal finish

SAMSUNG

SAMSUNG 840 Series MZ-7TD120KW 120GB 2.5" SATA internal SSD

SKU CH-51YB-JDVNG MPN MZ-7TD120KW

A 120GB 2.5" SATA internal SSD with 530MBps read, 130MBps write, and 1,500,000-hour MTBF

  • 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
  • Faster boot and load times with 530MBps sequential read
  • Responsive multitasking from up to 85000 IOPS random read
  • Reliable long-term storage backed by 1500000 hours MTBF
  • Low power draw of 0.046W idle extends laptop battery
  • Complete upgrade kit includes bracket, cables and spacer

Samsung 840 Series 120GB SATA SSD

The Samsung 840 Series MZ-7TD120KW is a 2.5 inch internal solid state drive with 120GB capacity and a SATA III interface. It uses a Samsung MDX controller and is intended for consumer desktop and laptop upgrades.

Suits light OS and app installs.

This drive fits users who need a responsive boot drive for an operating system and a modest set of applications. The 120GB capacity leaves little room for large game libraries, video projects or extensive photo collections, so creators and gamers should consider larger capacities.

120GB handles OS plus core apps.

The 120GB capacity comfortably holds a modern operating system, productivity suite and several frequently used programs. Sustained sequential read reaches 530MBps while write peaks at 130MBps, so large file transfers will be slower than reads. Random performance reaches 85000 read IOPS and 32000 write IOPS.

How it compares

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

Price $95.99
Cheaper than about 74% 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 $799.92 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-7TD120KW
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
Power
Idle power draw0.046 W
Active power draw0.071 W
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Shipping weight0.91 kg
Package size150 × 150 × 43 mm
In the box
Included itemsBracket
Screws
SATA Cable
Power Cable
USB to SATA Cable
Drive Spacer
More details
Mean time between failures1,500,000 h

Questions about this item

Do I need a spare 2.5 inch drive bay and a SATA data cable to install this 840 Series SSD?

The drive fits a standard 2.5 inch bay and the box includes a SATA cable, a power cable and a bracket so you can mount it without extra parts.

Will this SATA III drive work at full speed on a motherboard that only has SATA II ports?

The SSD is backward compatible with SATA II ports; it will operate at the slower SATA II transfer ceiling rather than its rated 530MBps read and 130MBps write speeds.

How can I verify the drive is delivering its rated 530MBps sequential read and 85,000 IOPS random read performance after setup?

Run a benchmark tool such as CrystalDiskMark or AS SSD and compare the sequential read result to 530MBps and the 4KB random read result to 85,000 IOPS.

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