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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

  • Device TypeInternal Solid State Drive (SSD)
  • Used ForConsumer
  • Form Factor2.5"
  • Capacity250GB
  • Memory Components3D NAND
  • InterfaceSATA III

Options 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.

Highlights

  • 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

Specifications

BrandWestern Digital
SeriesBlue
ModelWDS250G2B0A
Device TypeInternal Solid State Drive (SSD)
Used ForConsumer
Form Factor2.5"
Capacity250GB
Memory Components3D NAND
InterfaceSATA III
Max Sequential ReadUp to 550 MBps
Max Sequential WriteUp to 525 MBps
4KB Random ReadUp to 95,000 IOPS
4KB Random WriteUp to 81,000 IOPS
MTTFUp to 1.75M hours
Features3D NAND SATA SSD for capacities up to 4TB with enhanced reliability.
Sequential read speeds up to 550 MB/s and sequential write speeds up to 525 MB/s.
An industry-leading 1.75M hours mean time to failure (MTTF) and up to 100 terabytes written (TBW) for enhanced reliability.
WD F.I.T. Lab certification for compatibility with a wide range of computers.
Free downloadable software to monitor the status of your drive and clone a drive, or backup your data.
Power Consumption (Idle)56mW (Slumber)
5-7mW (DEVSLP)
Power Consumption (Active)52mW (Avg. Active Power)
2,200mW (Max Read Operating)
2,250mW (Max Write Operating)
Operating Temperature0°C ~ +70°C
Storage Temperature-55°C ~ +85°C
Max Shock Resistance1,500G @ 0.5 msec half sine
Max Vibration ResistanceOperating: 5.0 gRMS, 10-2000 Hz
Non-operating: 4.9 gRMS, 7-800 Hz
Height7.00mm
Width69.85mm
Depth100.20mm
Weight37.40g
Shipping weight0.06 kg
Package size126 × 102 × 20 mm

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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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