SAMSUNG 850 EVO mSATA 250GB internal SSD MZ-M5E250BW

250 GB mSATA SSD for ultra-thin devices

This 250 GB mSATA solid-state drive uses Samsung 3D V-NAND and a SATA III interface to deliver up to 540 MBps sequential read and 520 MBps sequential write speeds. It targets ultra-thin laptops and compact PCs that require a plug-in module form factor with low idle power draw. The drive includes Samsung Data Migration and Magician software for setup and maintenance.

Check mSATA slot and SATA III support

Before ordering, confirm that the host system provides an mSATA connector wired to a SATA 600 controller and that the BIOS or UEFI recognises bootable mSATA devices. The module measures 4.90 mm in height and 29.90 mm in width, so verify the socket clearance inside the chassis. Ensure the operating system can address a 250 GB volume without additional drivers.

Sustained performance and power behaviour

Under continuous workloads the controller manages thermal output while maintaining up to 97,000 IOPS random read and 88,000 IOPS random write performance. Active power consumption reaches 3.5 W during reads and 4.3 W during writes, dropping to 50 mW at idle. The 512 MB buffer helps smooth extended write sequences without the sharp throttling seen in short-burst benchmarks.