Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
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Western Digital
Western Digital WD3200AAKS 320GB 7200 RPM 16MB Cache SATA 3.5" internal hard drive
A 320 GB 3.5-inch desktop hard drive spinning at 7200 RPM with 16 MB cache and a SATA 3.0 Gb/s interface
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity320GB
- RPM7200 RPM
- Cache16MB
- Average Seek Time8.9ms
- 320 GB capacity stores large media libraries
- 7200 RPM spindle speed delivers quick data access
- 16 MB cache buffers bursts for smoother throughput
- SATA 3.0 Gb/s interface fits standard desktop motherboards
- IntelliSeek and SecurePark reduce noise and protect heads
320 GB 7200 RPM desktop hard drive
This 3.5-inch SATA drive delivers 320 GB of storage with a 7200 RPM spindle and 16 MB cache for everyday desktop workloads. It suits builders restoring older systems or adding a secondary volume where modest capacity is sufficient. The bare-drive package includes the mechanism only, ready for installation in a standard drive bay.
Ideal for legacy upgrades and basic storage
Users repairing or expanding SATA-based PCs from the 3 Gb/s era will find the interface and form factor a direct match. Buyers who need more capacity, lower access times or a 6 Gb/s interface should consider other options. The drive has been erased to a DoD 5220.22 M standard and tested functional, though up to 25 bad sectors may be present.
8.9 ms average seek time
The quoted 8.9 ms average seek time, combined with 4.2 ms latency and 10.9 ms average write time, defines the responsiveness you can expect from this mechanical drive. Those figures determine whether the performance envelope meets the needs of the intended application.
Highlights
- 320 GB capacity stores large media libraries
- 7200 RPM spindle speed delivers quick data access
- 16 MB cache buffers bursts for smoother throughput
- SATA 3.0 Gb/s interface fits standard desktop motherboards
- IntelliSeek and SecurePark reduce noise and protect heads
Specifications
| Brand | Western Digital |
|---|---|
| Series | Blue |
| Model | WD3200AAKS |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 320GB |
| RPM | 7200 RPM |
| Cache | 16MB |
| Average Seek Time | 8.9ms |
| Average Write Time | 10.9ms |
| Average Latency | 4.2ms |
| Features | IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise and vibration. SecurePark - Parks the recording heads off the disk surface during spin up, spin down and when the drive is off. This ensures the recording head never touches the disk surface resulting in improved long term reliability due to less head wear, and improved non- operational shock tolerance. |
| Form Factor | 3.5" |
| Shipping weight | 0.45 kg |
| Package size | 147 × 102 × 23 mm |
Questions about this item
What does the bare-drive packaging mean — do I need to buy cables or brackets separately?
The drive ships as a bare unit without SATA data or power cables, mounting screws or a bracket; you will need to supply those yourself.
Is the 320 GB capacity the only option in this WD Blue line or are there larger versions?
This specific model is the 320 GB variant; other capacities exist in the Blue series but they carry different model numbers.
How does the 7200 RPM spindle speed and 16 MB cache translate to everyday desktop use?
The 7200 RPM rotation and 16 MB cache deliver responsive boot times and smooth file transfers for typical office and media workloads.
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