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Small green circuit board M.2 2280 SSD with black chips

SAMSUNG

SAMSUNG 850 EVO M.2 2280 120GB SATA internal SSD MZ-N5E120BW

SKU CH-5T9X-1E197 MPN MZ-N5E120BW

A 120GB SATA M.2 2280 internal SSD with 3D NAND delivering up to 540 MBps read and 500 MBps write speeds

  • Total capacity120 GB
  • Sequential read speedUp to 540 MB/s
  • Sequential write speedUp to 500 MB/s
  • Interface typeSATA III
  • Form factorM.2 2280
  • Product typeInternal SSD Single Unit Version

Capacity 120GB

  • Sequential reads up to 540 MBps for fast boot times
  • Sequential writes up to 500 MBps speed up file saves
  • Random reads up to 97000 IOPS keep apps responsive
  • 3D NAND memory improves endurance and reliability
  • M.2 2280 form factor fits ultra-thin laptops and PCs

Samsung 850 EVO 120GB M.2 SATA SSD

The Samsung 850 EVO MZ-N5E120BW is a 120GB internal solid-state drive built on 3D NAND technology. It uses the M.2 2280 form factor and connects through a SATA III interface. Sequential reads reach up to 540 MBps and writes up to 500 MBps. Random 4KB performance hits 97,000 IOPS read and 89,000 IOPS write.

Suits SATA M.2 slots only

This drive fits laptops and desktops with an M.2 slot wired for SATA signalling. It will not operate in slots that only accept PCIe signalling. The 2.30mm height matches standard single-sided M.2 clearance. Buyers needing higher capacity or PCIe speeds should consider other models.

Interface decides compatibility

The defining specification is the SATA III interface combined with the M.2 2280 form factor. Verify that the host system's M.2 slot supports SATA before purchase. The MGX controller and 3D NAND deliver the quoted speeds within that SATA link.

How it compares

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

Price $162.99
Cheaper than about 55% 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 $1,358.25 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 line850 EVO
Model nameMZ-N5E120BW
Total capacity120 GB
Product typeInternal SSD Single Unit Version
Performance
Sequential read speedUp to 540 MB/s
Sequential write speedUp to 500 MB/s
Random read (4K)Up to 97,000 IOPS
Random write (4K)Up to 89,000 IOPS
Storage
NAND flash type3D NAND
Controller chipMGX
Ports & slots
Interface typeSATA III
Size & build
Form factorM.2 2280
Overall height2.3 mm
Overall width22 mm
Product depth80 mm
Product weight0.09 lb (0.04 kg)
Shipping weight0.06 kg
Package size142 × 97 × 20 mm

Other versions of this model

3 more in the same range

Questions about this item

Will the 120 GB 3D NAND drive slow down once its SLC cache fills during a long write?

The MGX controller manages 3D NAND directly; sustained writes run at up to 500 MBps once the cache is exhausted.

How warm does the M.2 2280 module get and does it need extra cooling during all-day use?

The 2.30 mm thick board draws little power; typical laptop airflow keeps it within normal operating temperature without a heatsink.

My laptop has an M.2 slot — what must it provide for this SATA III drive to work?

The slot must support SATA signalling and accept a 22 mm wide, 80 mm long module.

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