Samsung 850 EVO - 250GB - mSATA Internal SSD (MZ-M5E250BW)

Status: Samsung 850 EVO - 250GB - mSATA Internal SSD: Unavailable on Amazon as of 2026-10-06 04:20 UTC. Closest in-stock match (same 250GB): SAMSUNG 850 EVO 250GB 2.5-Inch SATA III Internal…, $49.74 on Amazon as of 2026-10-06 10:16 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $49.74 🛒 Search eBay for this model

Bottom line: The Samsung 850 EVO: World's first consumer 3D V-NAND SSD per Samsung's own product claim; main trade-off: 250GB fills fast if you store games or video projects.

Unavailable on Amazon as of 2026-10-06 04:20 UTC

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Currently unavailable on Amazon. Not the same product — an in-stock alternative with matching specs:

Same 250GB: SAMSUNG 850 EVO 250GB 2.5-Inch SATA III Internal… — $49.74 on Amazon as of 2026-10-06 10:16 UTC (price may vary).

View Current Price — $49.74

Original listing (currently unavailable) → Compare to similar ssds & storage

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

Mike Perry — Hardware researcher since 2014. For SSDs and PC storage upgrades, synthesises manufacturer specs and independent reviews rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference. About the author →

Pros & Cons

Pros

✓ World's first consumer 3D V-NAND SSD per Samsung's own product claim
✓ mSATA form factor fits ultra-thin laptops with no 2.5-inch bay
✓ DevSleep power management cuts idle drain on battery systems
✓ Sold in 120GB, 250GB, 500GB and 1TB so you can match your workload

Cons

✗ 250GB fills fast if you store games or video projects
✗ mSATA is a legacy slot - modern laptops use M.2 instead
✗ Samsung does not publish exact MB/s figures in this listing
✗ No brand field on this catalog entry - verify seller authenticity

Manufacturer description

The Samsung 850 EVO mSATA SSD brings 3D V-NAND flash to the compact mSATA form factor, making it a direct drop-in upgrade for ultra-thin laptops and small-form-factor PCs that can't take a 2.5-inch drive. Samsung calls this the world's first consumer 3D V-NAND SSD, and that vertically stacked cell design is what drives the 850 EVO's read/write performance, endurance, and power efficiency past the 840 EVO it replaced. This 250GB model sits in the middle of a lineup that spans 120GB, 250GB, 500GB, and 1TB, so you can size the drive to your machine without changing platforms. DevSleep support…

SpecPicks Verdict

SpecPicks scored Samsung 850 EVO using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Compare with similarly-priced alternatives in the ssds & storage category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this fit my laptop?

Only if your laptop has an mSATA slot. This is an mSATA module designed for ultra-thin laptops and PCs, not the M.2 or 2.5-inch SATA form factors. Check your system's manual or open the service panel to confirm an mSATA slot before ordering.

What capacities does the 850 EVO mSATA come in?

Samsung lists the mSATA 850 EVO in 120GB, 250GB, 500GB, and 1TB. This particular listing, model MZ-M5E250BW, is the 250GB version.

What makes 3D V-NAND different from regular SSD flash?

3D V-NAND stacks memory cells vertically instead of laying them out on a single plane. Samsung credits that three-dimensional chip design for the 850 EVO's superior performance, greater reliability, and better energy efficiency compared with the previous-generation 840 EVO.

Is 250GB enough for a boot drive?

For Windows plus office applications, a browser, and moderate document storage, 250GB is workable. If you install large PC games or edit video, plan on the 500GB or 1TB capacity in the same lineup instead.

How long is the warranty on this drive?

Samsung's warranty terms vary by region and by whether the drive is sold new or renewed. Check the current product listing and Samsung's official support page for the warranty that applies to your purchase.

Key Features

The World's First Consumer 3D V-NAND SSD
Ultimate Read/Write Performance
Enhanced Endurance and Reliability
Efficient Power Management supporting DevSleep Mode
Form Factor: mSATA - Designed for Ultra-Thin Laptops and PCs
Capacity: 120GB/250GB/500GB/1TB

Full Specifications

Brand	Samsung
Color	Black
Capacity	120GB/250GB/500GB/1TB
Model Name	850 EVO
Read Speed	540 megabytes_per_second
Form Factor	mSATA
Media Speed	520 megabytes_per_second
Model Number	BPSCS28631-MZ-M5E250BW
Hard-Drive Size	250 GB
Mfr Part Number	MZ-M5E250BW
Number of Items	480
Special Feature	Portable
Item Part Number	MZM5E250BW
Hardware Platform	PC; Mac
Installation Type	Screw In
Compatible Devices	This drive is compatible with any server that accepts 1.8"x3.5mm (Ultrathin Caseless) mSATA Drives.
Data Transfer Rate	6000 megabits_per_second
Additional Features	Portable
Hard Disk Interface	Solid State
Warranty Description	5 Years/75TBW

Ready to buy?

Amazon shows no buyable offer for Samsung 850 EVO - 250GB - mSATA Internal SSD at the last check. The closest in-stock match with the same 250GB is SAMSUNG 850 EVO 250GB 2.5-Inch SATA III Internal…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $49.74