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Silver rectangular 2.5 inch SATA SSD with blue label

Western Digital

Western Digital WDS250G2B0A Blue 250GB SATA internal SSD

SKU CH-Y145-54RPF MPN WDS250G2B0A

A 2.5-inch SATA SSD with 250GB of 3D NAND storage delivering up to 550 MB/s reads and 525 MB/s writes for everyday computing

  • Total capacity250 GB
  • Sequential read speedUp to 550 MB/s
  • Sequential write speedUp to 525 MB/s
  • Interface typeSATA III
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)

Model 250GB

  • Faster boots and file loads with sequential read up to 550 MB/s
  • Quicker saves and installs thanks to sequential write up to 525 MB/s
  • Responsive multitasking from 95,000 random read IOPS and 81,000 random write IOPS
  • Long-term reliability backed by 1.75M hour MTTF and 100 TBW rating
  • Low 52 mW average active power draw keeps laptops running cooler and longer

WD Blue 3D NAND 250GB SATA SSD

This 2.5 inch internal solid state drive uses 3D NAND flash and a SATA III interface. It is built for everyday consumer workloads such as operating system boot, application launch and general file storage.

SATA III 6Gb/s interface

The drive connects through a standard SATA III port, delivering sequential reads up to 550 MB/s and writes up to 525 MB/s. Random performance reaches 95,000 IOPS read and 81,000 IOPS write, with an MTTF rating of 1.75M hours and 100 TBW endurance.

Fits 2.5 inch bays with 7mm height

Low idle power of 56mW and DEVSLP down to 5-7mW reduce laptop battery drain. Active power peaks at 2,250mW during writes. WD F.I.T. Lab certification confirms broad system compatibility, and free downloadable software enables drive monitoring, cloning and backup.

How it compares

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

Price $41.99
Cheaper than about 92% of the 1,994 comparable items (median $180.49).
Total capacity 250 GB
Lower than about 84% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 550 MB/s
Lower than about 70% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $167.96 per TB
Typical for this category: the median of 1,362 items is $165.50 per TB.

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Specifications

Product
Brand nameWestern Digital
Product lineBlue
Model nameWDS250G2B0A
Total capacity250 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Performance
Sequential read speedUp to 550 MB/s
Sequential write speedUp to 525 MB/s
Random read (4K)Up to 95,000 IOPS
Random write (4K)Up to 81,000 IOPS
Storage
NAND flash type3D NAND
Ports & slots
Interface typeSATA III
Power
Idle power draw56mW (Slumber)
5-7mW (DEVSLP)
Active power draw52mW (Avg. Active Power)
2,200mW (Max Read Operating)
2,250mW (Max Write Operating)
Size & build
Form factor2.5 in (6.35 cm)
Overall height7 mm
Overall width69.85 mm
Product depth100.2 mm
Product weight37.4g
Shipping weight0.06 kg
Package size126 × 102 × 20 mm
Environment & compliance
Operating temperature range0 °C to 70 °C
Storage temperature range-55 °C to 85 °C
Max shock tolerance1,500G @ 0.5 msec half sine
Vibration toleranceOperating: 5.0 gRMS, 10-2000 Hz
Non-operating: 4.9 gRMS, 7-800 Hz
More details
Mean time to failureUp to 1.75M hours

Other versions of this model

5 more in the same range

Questions about this item

What does the 550 MB/s sequential read figure mean for everyday use?

The 550 MB/s read speed is the SATA III interface limit. In a real machine you will see faster boot times, quicker application launches and snappier file copies compared with a mechanical hard drive, but the drive cannot exceed the SATA ceiling.

How does the SATA III interface affect the drive's performance ceiling?

SATA III caps the drive at 6 Gb/s, so the quoted 550 MB/s read and 525 MB/s write speeds are the practical maximum. No firmware update or system tweak can push throughput beyond that limit.

Will the 2.5-inch 7 mm form factor fit my laptop's drive bay?

The drive measures 2.5 inches with a 7 mm z-height, the standard size for most laptop and desktop bays. If your system uses a thinner 7 mm caddy or spacer, the drive will still mount securely.

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