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Samsung 850 EVO M.2 MZ-N5E250BW 250 GB

Photos - SSD Samsung 850 EVO M.2 MZ-N5E250BW 250 GB
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Outdated Product
1 599 
Placement: internal; Size (GB): 250; Form factor: M.2; M.2 interface: SATA 3; Controller: Samsung MGX; Write speed (MB/s): 500; Read speed (MB/s): 540; DWPD (times/day): 0.2; Manufacturer's warranty: 5 years; TRIM;
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Samsung MZ-N5E250BW
Placement
internal
Size
250 GB
Form factor
M.2
M.2 interface
SATA 3
Controller
Samsung MGX
Cache memory
512 MB
Memory type
3D TLC NAND
Write speed
500 MB/s
Read speed
540 MB/s
Shockproof
1500 G
MTBF
1.5 m h
Write IOPS
89 K
Read IOPS
97 K
TBW
75 TB
DWPD
0.2 times/day
Manufacturer's warranty
5 years
TRIM
Size
22x80 mm
Added to E-Catalog
june 2015
Compact dimensions. High read and write speed even after a crash. Large RAM cache. High energy efficiency. 5 years warranty.
May not fit in laptop (length 80mm).
Information in model description is for reference purposes.
Before buying always check characteristics and configuration of product with online store manager
Catalog Samsung 2024 - new products, best sales and most actual models Samsung.

My own boss

At the moment, Samsung is the only company in the world that owns a full cycle of SSD production. For example, the ultra-compact, energy-efficient 850 EVO M.2 drive is based on Samsung's 3D TLC flash memory, made using a 40-nanometer process technology. By the standards of planar memory (15 – 16 nm), the technical process is very large, but this is explained so far by the impossibility of packing smaller transistors into 32 layers.

When less is better

Using the Samsung MGX smart controller, a virtual SLC array is implemented, or, as the manufacturer himself calls it, TurboWrite. The volume of the array is extremely small — only 3 GB, which is even less than the cheapest SATA-SSDs on the Phison controller. On the other hand, the drawdown of the write speed is less — from 500 to only 300 MB / s (instead of 70 MB / s for Phison). The flash memory and smart controller are supplemented with a cache from 512 MB of RAM, naturally also manufactured by Samsung. And here is the set-off — the analogs have only 256 MB of RAM-cache. A nice bonus is a 5-year warranty, atypical for SATA-TLC drives, but so far mandatory for M.2.

Small, yes not enough

Finally, it is worth noting that the Samsung 850 EVO, like other low-cost M.2 drives, does not work through the high-speed PCI-E bus, but through the usual SATA III. Because of this, the read speed is limited to 540 Mbps. The Samsung 850 EVO is 80mm long, which means it will fit perfectly into the M.2 slot of a desktop PC motherboard (convenient cable-free connection), but may not fit into an ultrabook that only supports the smallest 60mm drives. By the way, the 850 EVO M.2 has an mSATA counterpart with similar characteristics, designed for older laptops and nettops.

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