WD Black 320GB Performance Mobile Hard Disk Drive - 7200 RPM SATA 6 Gb/s 16MB Cache 9.5 MM 2.5 Inch - WD3200BEKX
Desktop-class performance for notebook computers.
Maximum performance
Sophisticated performance enhancing features deliver the speed you need for demanding applications like photo and video editing and Internet gaming.
No compromises
High performance, high capacity, high reliability, and cutting-edge technology make up WD Black, the ideal drive for those who demand only the best.
Feature rich
WD Black hard drives combine a high performance, 16 MB cache and SATA 6 Gb/s interface for the ultimate in power computing for notebooks.
High performance electronics
WD Black drives feature a dual processor and bigger, faster dynamic cache for maximum read and write speeds.
Dual processor
Twice the processing power to maximize performance.
Rock-solid Mechanical Architecture
Enhanced reliability features help protect the drive and the data stored on it.
NoTouch Ramp Load technology
The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.
Dynamic Cache
WD's dynamic caching algorithm improves performance in real time by optimizing cache allocation between reads and writes. For example, if there's an overwhelming percentage of read traffic as opposed to write traffic, the drive automatically allocates more cache for read data, which reduces congestion and improves overall drive performance.
Upgrading your drive is easy
WD Acronis TrueImage, available as a free download on the WD Support site, enables you to copy all your data to a new drive so you don't have to reinstall your operating system to get all the benefits of a new drive.
Features at a glance
The WD advantage
WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. On average, each new product goes through 600,000 hours of testing. WD also has a detailed Knowledge Base with more than 1,000 helpful articles. You can also call toll-free support 7 days per week in the U.S. and Canada. See the WD Support site for full details.
WD-certified packaging
All WD drives purchased from Amazon.com are shipped in WD-certified hard drive packaging. It is designed and fully tested to provide WD products with the highest of safety while in transit. With WD-certified packaging, you can rest assured that your WD hard drive will arrive safely, fully protected, in a non-descript, easy-open package.
Recommended use
WD Black hard drives are tested and recommended for use in notebook computers.
 2.5-inch Internal Comparison Chart |  WD Blue |  WD Green |  WD Black | WD Black2 |  WD Red |
| Big capacity for portable computing. | Cool, quiet operation with massive capacity. | Desktop-class performance for notebook computers. | The must have solution for your single-bay PC. | The right drive for personal, home or small office NAS. | |
| Ideal for | Notebooks, external enclosures and certain industrial applications. | Custom-built enclosures and other applications that require cool and quiet operation. | Notebook computers. | Notebooks and all-in-one computers. | Personal, home and small office, 1-5 bay NAS systems. |
| Type | HDD | HDD | HDD | Dual Drive | HDD |
| Capacity range | 250 GB €“ 1 TB | 1.5 TB €“ 2 TB | 160 GB €“ 750 GB | 120 GB SSD + 1 TB HDD | 750 GB €“ 1 TB |
| Interface | SATA 6 Gb/s SATA 3 Gb/s | SATA 6 Gb/s SATA 3 Gb/s | SATA 6 Gb/s SATA 3 Gb/s | SATA 6 Gb/s | SATA 6 Gb/s |
| Form factor | 2.5-inch | 2.5-inch | 2.5-inch | 2.5-inch | 2.5-inch |
| Height | 7 mm 9.5 mm | 15 mm | 9.5 mm | 9.5 mm | 9.5 mm |
| Cache | 8 MB 16 MB | 8 MB | 16 MB | n/a | 16 MB |
| Highest notebook capacity |  | | |||
| Highest performance | | ||||
| Photo/video editing | | | |||
| Network Storage Systems | |
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