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Rectangular 2.5 inch SSD with blue label and silver metal casing

Western Digital

Western Digital Blue 250GB 2.5" SATA internal SSD

SKU CH-3DQ3-FX4AJ

2.5-inch SATA internal SSD with 250 GB capacity using 3D NAND, delivering up to 550 MB/s read and 525 MB/s write speeds

  • Total capacity250 GB
  • Interface typeSATA
  • Form factor2.5 in (6.35 cm)
  • Product typeInternal Solid State Drive (SSD)
  • Intended useConsumer
  • NAND flash type3D NAND
  • 250 GB capacity stores your OS and everyday files
  • 550 MB/s maximum read speed loads applications quickly
  • 525 MB/s maximum write speed saves large projects fast
  • 3D NAND memory improves endurance and reliability
  • 5 inch 7 mm form factor fits most laptops and desktops

250GB SATA SSD for Everyday Computing

The Western Digital Blue 250GB 2.5" SATA internal SSD uses 3D NAND technology in a standard 2.5 inch form factor. It connects through the SATA 6 Gb/s interface and delivers sequential read speeds up to 550 MB/s and write speeds up to 525 MB/s. The drive weighs 3.0000 grams and is built for consumer workloads.

Ideal for SATA-only Laptops and Desktops

This drive suits older laptops or desktops that only have 2.5 inch SATA bays and need a reliable capacity boost for the operating system and applications. It is not the right choice for systems with M.2 slots that support faster PCIe storage, or for users who need higher capacities for large media libraries.

SATA 6 Gb/s Interface Determines Compatibility

The single specification that decides fit is the SATA 6 Gb/s interface paired with the 2.5 inch 7mm form factor. Your motherboard or laptop must provide a standard SATA data and power connector and a 2.5 inch drive bay or caddy; without that physical and electrical match the drive cannot be installed.

How it compares

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

Price $37.99
Cheaper than about 93% 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).
Price per TB $151.96 per TB
Cheaper than about 56% of the 1,362 comparable items (median $165.50 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineBlue
Total capacity250 GB
Product typeInternal Solid State Drive (SSD)
Intended useConsumer
Storage
NAND flash type3D NAND
Ports & slots
Interface typeSATA
Size & build
Form factor2.5 in (6.35 cm)

Questions about this item

What does the 550 MB/s maximum read speed mean once the drive is installed in a real machine?

The 550 MB/s maximum read speed is the peak sequential throughput the controller can deliver over the SATA link; everyday file copies and game loads will run at or below that ceiling depending on file size, queue depth and system overhead.

What does the SATA interface cap in practice for this drive?

The drive connects through a standard SATA port and its 550 MB/s read and 525 MB/s write limits are the practical ceiling you will observe; the bus itself does not impose a lower bottleneck.

What does the 2.5-inch, 7 mm form factor need to fit or mount in a laptop or desktop?

It requires a standard 2.5-inch drive bay or caddy with 7 mm clearance and a regular SATA data plus power connection; most laptops and desktops with a 2.5-inch slot accept it directly.

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