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A compact mSATA circuit board with black chips and gold edge connector

SAMSUNG

SAMSUNG 850 EVO mSATA 500GB Internal SSD MZ-M5E500BW

SKU CH-FMSY-WFR7E MPN MZ-M5E500BW

mSATA internal SSD with 500 GB capacity, 540 MB/s read and 520 MB/s write speeds using 3D NAND and SATA III interface

  • Total capacity500 GB
  • Sequential read speedUp to 540 MB/s
  • Sequential write speedUp to 520 MB/s
  • Interface typeSATA III
  • Form factormSATA
  • Product typeInternal SSD Single Unit Version

Capacity 500GB

  • 540 MB/s sequential read accelerates boot and load times
  • 520 MB/s sequential write speeds file saves and installs
  • 97,000 random read IOPS keeps multitasking responsive
  • 88,000 random write IOPS handles heavy write workloads
  • 3D V-NAND with MGX controller delivers endurance in a 4.90 mm mSATA form factor

Product Identity

The Samsung 850 EVO mSATA 500GB is an internal solid-state drive built for consumer laptops and ultra-thin PCs that require the mSATA form factor. It uses 3D V-NAND memory and a SATA III interface to deliver reliable storage in a compact design.

Thermals, Noise and Power

With no moving parts, the drive operates silently and produces negligible heat during typical workloads. Idle power draw is 50mW, rising to 3.5W during read activity and 4.3W during write activity.

Sustained Load Behaviour

Under continuous operation the MGX controller maintains sequential speeds of up to 540 MBps read and 520 MBps write. Random performance reaches 97,000 IOPS read and 88,000 IOPS write, while 3D V-NAND technology supports enhanced endurance for heavy daily use.

How it compares

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

Price $131.99
Cheaper than about 63% of the 1,994 comparable items (median $180.49).
Total capacity 500 GB
Lower than about 70% 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 $263.98 per TB
Pricier than about 72% of the 1,362 comparable items (median $165.50 per TB).

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 line850 EVO
Model nameMZ-M5E500BW
Total capacity500 GB
Product typeInternal SSD Single Unit Version
Intended useConsumer
Performance
Sequential read speedUp to 540 MB/s
Sequential write speedUp to 520 MB/s
Random read (4K)Up to 97,000 IOPS
Random write (4K)Up to 88,000 IOPS
Storage
NAND flash type3D NAND
Controller chipMGX
Ports & slots
Interface typeSATA III
Power
Idle power draw50mW
Active power drawRead: 3.5 W
Write: 4.3 W
Size & build
Form factormSATA
Overall height4.9 mm
Overall width29.9 mm
Product depth50.8 mm
Product weight0.02 lb (0.01 kg)
Shipping weight0.07 kg
Package size142 × 99 × 23 mm

Other versions of this model

3 more in the same range

Questions about this item

How do I install the mSATA 500GB drive and which step is commonly missed?

Insert the drive at an angle into the mSATA slot, press it down flat, and secure it with the retention screw; the step often missed is fastening that screw, which prevents the drive from lifting and losing contact.

What maintenance or replacement will the 3D NAND SSD need over time?

No mechanical maintenance is required; the drive relies on the MGX controller and Samsung Magician software to manage wear levelling and firmware updates, so replacement only occurs if the NAND reaches its write endurance limit.

What limit appears first during sustained heavy writes on this SATA III model?

The sequential write ceiling of 520 MBps is reached before the 4.3 W active power draw or thermal limits become a bottleneck.

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