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Silver 2.5 inch SATA SSD with 7mm height

SAMSUNG

SAMSUNG 850 PRO 128GB 2.5" SATA internal SSD MZ-7KE128BW

SKU CH-729V-QG7P9 MPN MZ-7KE128BW

128 GB 2.5" SATA SSD with 3D V-NAND delivering up to 550 MB/s read and 470 MB/s write, 100k/90k IOPS, 2M-hour MTBF, and 0.05 W idle power

  • Total capacity128 GB
  • Sequential read speedUp to 550 MB/s
  • Sequential write speedUp to 470 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • World's first consumer 3D V-NAND technology for breakthrough density
  • Sequential read up to 550 MBps and write up to 470 MBps for responsive workloads
  • Random read up to 100,000 IOPS and write up to 90,000 IOPS for snappy multitasking
  • MTBF of 2,000,000 hours with enhanced endurance for long-term reliability
  • Idle power of 0.05W and active power of 2.8W for efficient operation

Samsung 850 PRO 128GB 2.5" SATA SSD

This drive is a 2.5 inch internal solid state drive with a capacity of 128GB. It uses 3D Vertical NAND memory and a Samsung MEX controller connected through a SATA III interface. The drive delivers sequential read speeds up to 550 MBps and sequential write speeds up to 470 MBps.

Suits SATA 2.5" bays; not for M.2 slots

This drive suits users upgrading a laptop or desktop that accepts a 2.5 inch SATA drive with a 7.00mm height. It supports random read performance up to 100,000 IOPS and random write up to 90,000 IOPS. Buyers needing an M.2 form factor or a different capacity should look at other models.

Deciding spec: 128GB capacity

The 128GB capacity is the single specification that decides whether this is the right part. The drive offers an MTBF of 2,000,000 hours with active power consumption of 2.8W and idle consumption of 0.05W. It operates reliably between 0°C and 70°C with humidity tolerance of 5% to 95% RH.

How it compares

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

Price $265.99
Pricier than about 64% of the 1,994 comparable items (median $180.49).
Total capacity 128 GB
Lower than about 95% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 550 MB/s
Lower than about 70% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $2,078.05 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 line850 PRO
Model nameMZ-7KE128BW
Total capacity128 GB
Product typeInternal Solid State Drive (SSD)
Performance
Sequential read speedUp to 550 MB/s
Sequential write speedUp to 470 MB/s
Random read (4K)Up to 100,000 IOPS
Random write (4K)Up to 90,000 IOPS
Storage
NAND flash type3-D Vertical
Controller chipSamsung MEX Controller
Ports & slots
Interface typeSATA III
Power
Idle power draw0.05 W
Active power draw2.8 W
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100 mm
Product weight0.14 lb (0.06 kg)
Shipping weight0.12 kg
Package size146 × 145 × 19 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Operating humidity range5% to 95% RH
More details
Mean time between failures2,000,000 h

Questions about this item

Does my laptop need a 2.5 inch SATA drive bay to fit this 128GB SSD?

Yes, the drive uses the 2.5 inch form factor and connects through a standard SATA III port, so the system must provide a matching bay and data cable.

Will this SATA III SSD run at full speed on an older motherboard that only supports SATA II?

The drive is backward compatible with SATA II ports, though sequential reads and writes will be limited to the older interface's lower bandwidth.

How can I confirm the drive is delivering its rated 550 MBps read and 470 MBps write speeds after installation?

Run a benchmark tool such as Samsung Magician or CrystalDiskMark; the sequential results should approach the stated figures when the drive is connected to a native SATA III port.

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