Western Digital Caviar Blue 640 GB Bulk/OEM Hard Drive 3.5 Inch, 16 MB Cache, 7200 RPM SATA II WD6400AAKS

• WD Caviar Blue hard drives have a multitude of features to deliver rock solid performance and ultra-cool and quiet operation..
• WhisperDrive technology minimizes noise to levels near the threshold of human hearing..
• SoftSeek technology streamlines read/write seeking algorithms, resulting in more efficient operation..
• 640 GB capacity holds up to 128,000 digital photos, 160,000 MP3 files, and up to 77 hours of HD video..
• 3 year limited warranty..
• Ships in Certified Frustration-Free Packaging.
• WD Caviar Blue hard drives are available with either SATA.
• IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise, and vibration..

Product Description ------------------- WD Caviar Blue hard drives are available with either SATA or EIDE interface in a variety of cache sizes with a multitude of available features to deliver rock solid performance and ultra-cool and quiet operation. Pick the drive that suits your needs with the confidence in knowing that all WD Caviar Blue drives are built to the highest standards of quality and reliability. With capacities ranging from 40 GB to 640 GB, these drives are the perfect solution for family and business computing. From the Manufacturer --------------------- It's easy to choose the world-class quality of a Western Digital hard drive. We’ve not only designed a drive that's right for you, we've also made it simple to find. These drives are ideal for business, home use, or high performance desktops, and are available in capacities up to 2 TB. With our renowned leading-edge engineering, you'll always make the right choice with WD. And you'll never compromise on quality. The power of choice. The quality of WD. WD Caviar® Blue™ Performance and reliability for everyday computing. Select true blue for reliable quality in everyday use. WD Caviar® Green™ Cool, quiet. Select green for doing more with less energy consumption. WD Caviar® Black™ Maximum performance for power computing. Select black when you demand the highest performance. WD Caviar Blue – Performance and reliability for everyday computingTo make drive selection simple, we've gathered all our popular WD Caviar SE16, WD Caviar SE, and WD Caviar drives under one umbrella we call WD Caviar Blue. Built to Western Digital's awarding winning quality standards, these drives are available in a full range of performance features. Features at a glance * Solid performance * Ultra-cool and quiet * Capacities up to 750 GB * 3-years limited warranty Interface PATA - Enhanced integrated drive electronics (PATA), also called Parallel ATA (PATA), hard drives have been the standard in the computer industry for more than 10 years. SATA - Serial ATA (SATA) hard drives are quickly becoming the new standard. Motoard manufacturers now include SATA inputs on their boards. Because of their considerably narrower cables, SATA hard drives provide increased airflow and less clutter and in the computer system compared to PATA drives. The performance difference - PATA drives support data transfer rates up to 100MB/sec, and all WD Caviar Blue SATA drive support 3 Gb/s transfer rates. Cache - WD Caviar Blue is available in 2 MB, 8 MB, and 16 MB cache sizes. Bigger cache memory yields faster performance. Capacity- We offer drives ranging from 40 GB to 750 GB. Pick the biggest capacity your budget will allow. You can never have too much storage space. Reliability - We understand the importance of your data, and we are committed to protecting that data with exceptionally reliable products, advanced data protection technology and superior customer support. Cool - Keeping the drive cool enhances reliability. WD continues to develop new and innovative ways to keep drives cool while they are operating. Quiet - The technology that Tom's Hardware Guide called "very fast and nearly silent" is used throughout this family of drives. Our WhisperDrive technology minimizes noise to levels near the threshold of human hearing. To cut seek noise, SoftSeek technology streamlines read/write seeking algorithms, resulting in more efficient operation. View IntelliSeek demo here. ( http://www.wdc.com/en/flash/index.asp?family=intelliseek )NoTouch™ ramp load technology - The head never touches the disk media ensuring significantly less wear to the head and media as well as better drive protection in transit. (Available on 120 GB capacities and above) IntelliSeek™ - Calculates optimum seek speeds to lower power consumption, noise and vibration. (Available on 120 GB capacities and above) Compatible - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab and Mobile Compatibility Lab to give our customers confidence that our drives will work in their systems. How this WD hard drive protects your data * Data Lifeguard is an exclusive set of data protection features, including shock protection, an environmental protection system and real-time embedded error detection and repair. WD's Data Lifeguard technology automatically finds, isolates, and repairs problems that may develop over the life of a hard drive. * Data Lifeguard Tools are software utilities designed for WD hard drives that work with the embedded Data Lifeguard features to make hard drive installation,diagnostics and repair both simple and worry-free. * ShockGuard instantaneously protects the hard drive against damage from bumps and vibrations while it is running. This technology enables WD Caviar drives to achieve industry-leading shock specifications. Ideal For Family and business computing.