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Silver 3.5 inch bare SATA hard drive with exposed circuit board

Western Digital

Western Digital WD2500JS 250GB 7200 RPM 8MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-DKYV-3KWWA MPN WD2500JS

A 250 GB 3.5-inch SATA desktop hard drive spinning at 7200 RPM with 8 MB cache and 3.0 Gb/s transfer rate

  • Total capacity250 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeDesktop
  • Rotational speed7,200 RPM
  • 250 GB capacity stores large media libraries
  • 7200 RPM spindle speed delivers responsive desktop performance
  • 8 MB cache buffers frequent read and write requests
  • SATA 3.0 Gb/s interface connects to standard motherboard ports
  • 5 inch form factor fits typical desktop drive bays

250GB SATA desktop drive

The Western Digital Caviar SE WD2500JS is a 3.5-inch internal hard drive with a 250GB capacity and a 7200 RPM spindle speed. It connects through a SATA 3.0Gb/s interface and includes an 8MB cache buffer. The bare-drive unit is built for standard desktop storage tasks.

Suits basic storage; not for high-speed

This drive suits builders adding affordable bulk storage to a desktop PC, a home server or a DVR where cool, quiet operation is valued. It is not for workloads that demand the low latency or high throughput of solid-state media, nor for arrays that require more than 250GB per spindle.

7200 RPM spindle speed

The 7200 RPM rotation rate delivers an average seek time of 8.9ms and an average latency of 4.2ms, which determines how quickly the drive can locate and stream data. This single mechanical figure decides whether the drive meets the performance target for the intended desktop or recording application.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $51.99
Cheaper than about 76% of the 4,938 comparable items (median $107.99).
Total capacity 250 GB
Lower than about 90% of the 2,372 comparable items (median 2 TB).
Price per TB $207.96 per TB
Pricier than about 79% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineCaviar SE
Model nameWD2500JS
Total capacity250 GB
Performance
Rotational speed7,200 RPM
Average seek time8.9 ms
Mean latency4.2 ms
Storage
Flash memory typeDesktop
Cache memory8 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.54 kg
Package size152 × 102 × 25 mm

Questions about this item

What does the SATA 3.0Gb/s interface cap the transfer rate at?

The SATA 3.0Gb/s interface limits the maximum burst transfer rate to 3.0 Gb/s.

What physical space and mounting does the 3.5" form factor need?

It requires a standard 3.5-inch drive bay and four side or bottom mounting screws.

How is the drive installed, and which step is often missed?

Connect the SATA data and power cables, secure the drive with screws, then initialise and format the 250GB volume in the operating system.

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