We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small rectangular mSATA SSD with black label and gold edge connector

SAMSUNG

SAMSUNG 860 EVO MZ-M6E250BW 250GB mSATA internal SSD

SKU CH-K8NF-1FN01

250 GB mSATA internal SSD with SATA III interface, up to 550 MBps read and 520 MBps write, AES 256-bit encryption, and 1,500,000 hour MTBF

  • Sequential read speedUp to 550 MB/s
  • Sequential write speedUp to 520 MB/s
  • Interface typeSATA III
  • Product typeInternal Solid State Drive (SSD)
  • Intended useConsumer
  • Controller chipSamsung MJX Controller
  • Up to 550 MBps sequential read for fast boot times
  • Up to 520 MBps sequential write for quick file saves
  • 97,000 IOPS random read at QD32 for responsive multitasking
  • AES 256-bit hardware encryption protects sensitive data
  • 5 million hours MTBF indicates long-term reliability

Purpose and audience

The Samsung 860 EVO MZ-M6E250BW is a 250GB internal SSD built on the SATA interface and the mSATA form factor. It targets users who need solid-state speed in older laptops or compact desktops that lack 2.5-inch bays or M.2 slots. The drive delivers sequential reads up to 550 MBps and writes up to 520 MBps for responsive boot and application loading.

Build integration

The mSATA module measures 50.80mm by 29.97mm by 4.83mm and slots directly into a compatible mSATA socket, requiring no drive cage or cabling. It draws an average 2.2W active and peaks at 4.5W, leaving ample thermal headroom in thin chassis. Trim, S.M.A.R.T. and auto garbage collection maintain performance without user intervention, while AES 256-bit encryption secures data at rest.

Upgrade context

Replacing a mechanical hard drive with this 860 EVO yields random read IOPS up to 97,000 at QD32 and random write IOPS up to 88,000, transforming system responsiveness. The jump is most noticeable on SATA III platforms where the controller can saturate the link; on SATA II hosts the drive still works but caps at the bus limit. A 1,500,000-hour MTBF and 1,500G shock rating suit mobile use.

How it compares

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

Price $122.99
Cheaper than about 66% of the 1,994 comparable items (median $180.49).
Sequential read speed Up to 550 MB/s
Lower than about 70% of the 1,180 comparable items (median 2,400 MB/s).
Sequential write speed Up to 520 MB/s
Lower than about 70% of the 1,184 comparable items (median 1,700 MB/s).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSAMSUNG
Product line860 EVO Series
Model nameMZ-M6E250BW
Part numberMZ-M6E250
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 550 MB/s
Sequential write speedUp to 520 MB/s
Random read (4K)Random (QD1): Up to 10,000 IOPS; Random (QD32): Up to 97,000 IOPS
Random write (4K)Random (QD1): Up to 42,000 IOPS; Random (QD32): Up to 88,000 IOPS
Storage
Controller chipSamsung MJX Controller
Ports & slots
Interface typeSATA III
Power
Active power drawAverage: 2.2 W
Maximum: 4.5 W (Burst mode)
Size & build
Overall height4.83 mm
Overall width29.97 mm
Product depth50.8 mm
Product weight81.65g
In the box
Included itemsSSD only ( new - 0 days, 0 h) in plastivc case, no retail box or other papers
Environment & compliance
Operating temperature range0 °C to 70 °C
Max shock tolerance1,500G & 0.5 ms (Half sine)
More details
Mean time between failures1,500,000 h

Questions about this item

Will the 250 GB capacity and 520 MBps write speed sustain all-day workloads without hitting a limit?

The drive is rated for up to 520 MBps sequential write and 88,000 IOPS random write at QD32, with a 1,500,000-hour MTBF and AES 256-bit encryption that do not throttle under sustained use.

How much heat and power does the MZ-M6E250BW produce when running continuously?

Average active power is 2.2 W with a 4.5 W burst maximum, and the operating range is 0 °C to 70 °C; the mSATA form factor has no fan, so case airflow handles the heat.

What connector and protocol must the host provide for this mSATA SSD to work?

The host needs a full-size mSATA slot wired for the SATA III interface; the drive uses the Samsung MJX controller and supports TRIM, S.M.A.R.T. and garbage collection automatically.

More in Internal NVMe & SATA SSDs

Similar items