WD Black 320 GB Mobile Hard Drive - 7200 RPM Performance

In this review the WD Black 320 GB Mobile Hard Drive is presented as a focused choice for laptop users and technicians who need a step up from standard 5400 RPM drives. The bottom line: it delivers noticeably faster seek and transfer responsiveness thanks to its 7200 RPM spindle speed and 16 MB cache, while keeping power use comparable to slower drives. For anyone installing a higher-performance internal drive in an older laptop or using it as a secondary storage option, the WD Black strikes a solid balance of speed, capacity, and reliability.

Key Features

• 7200 RPM spindle: Provides desktop-class rotational speed for quicker file access and improved application load times compared with typical 5400 RPM laptop drives.
• SATA 3 Gb/s interface: Enables sustained transfer rates that suit backups, media playback, and general storage tasks on modern laptops and desktops that support SATA II.
• 16 MB cache: Helps smooth burst transfers and small-file operations, reducing lag during common tasks like opening programs or copying many small files.
• 320 GB capacity: Holds a substantial library of media - photos, music, and hours of HD video - without the bulk or power draw of larger desktop drives.
• IntelliSeek: Balances seek speed to lower power consumption, noise, and vibration for a quieter operating experience.
• 5 year limited warranty: Offers long-term peace of mind compared with shorter warranty periods common on low-cost laptop drives.

Who It's For

The WD Black 320 GB drive is best for laptop owners who want a tangible performance upgrade for boot times, application launches, and file transfers without moving to an SSD. It suits users replacing a failed drive in an older notebook or building a secondary internal drive for media and backups.

It is less appropriate for buyers whose highest priorities are the absolute lowest power draw or the fastest sequential throughput available today; users seeking the lightest weight, lowest heat, or peak solid-state responsiveness should consider modern SSDs instead.

Pros & Cons

Pros

• Noticeable performance boost from 7200 RPM over standard 5400 RPM laptop drives.
• Good storage density for its size, with 320 GB fitting many media collections without external devices.
• Quiet operation and reduced vibration thanks to IntelliSeek tuning.
• Five year limited warranty provides added confidence for longer-term use.

Cons

• Still a mechanical drive, so it cannot match SSDs for instantaneous access times or absolute power efficiency.
• 320 GB capacity is modest by current standards where larger capacities are common.

Specifications

Model	WD3200BEKT (WD Black 320 GB)
Form factor	2.5 in
Interface	SATA II (3 Gb/s)
Spindle speed	7200 RPM
Cache	16 MB
Capacity	320 GB
Warranty	5 year limited

Our Verdict

The WD Black 320 GB is a practical upgrade for laptop users who need stronger sustained performance than a 5400 RPM disk without moving to an SSD. It pairs a useful capacity with desktop-class 7200 RPM speed and a long warranty, making it a good value for installations where mechanical storage remains acceptable.

Frequently Asked Questions

Will this drive fit most laptops?
Yes, it is a standard 2.5 in SATA II drive and fits most notebooks that accept 2.5 in SATA hard drives.

Is this drive noticeably louder than a 5400 RPM drive?
No, customers report quiet operation and reduced vibration thanks to IntelliSeek, though it will still be a mechanical drive sound compared with an SSD.

Can it be used in Mac, PC, and Linux systems?
Yes, the drive is compatible with Mac, PC, and Linux platforms when formatted appropriately.