• WD Black high performance 3.5-Inch SATA hard drives combine 7200 RPM spin speed, 64 MB cache, and SATA 6 Gb/s interface for the ultimate in power computing..
• High performance electronics architecture features dual processors and bigger, faster caches for maximum read and write speeds..
• Srac The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations..
• 4 TB capacity holds up to 800,000 digital photos, 1,000,000 MP3 files, and 300 hours of HD video..
• 5 year limited warranty..
• Microsoft operating systems prior to Vista, 32-bit operating systems, and Mac systems prior to OSX 10.4 may not support volumes greater than 2TB. To recognize the full capacity of this drive, you may need multiple partitions. Check with the manufacturer to verify your system’s compatibility..

WD Black Desktop Hard Drives – Maximum performance for power computing. ----------------------------------------------------------------- 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. High capacity. State-of-the-art technology delivers a balance of high performance and high capacity perfect for data-intensive workloads that require large as of storage such as video editing, 3D rendering and scientific modeling. Product Features ---------------- 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. 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 sed to write traffic, the drive automatically allocates more cache for read data, which reduces congestion and improves overall drive performance. Rock-solid mechanical architecture - Enhanced reliability features help protect the drive and the data stored on it. 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. Srac - The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations which enables consistently higher performance. (2 TB and 1.5 TB models only) Tested for compatibility - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab to give our customers confidence that our drives will work in their systems. 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. 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. WD-certified packaging - All WD drives purchased from .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. Compatibility Works with Windows 7/Vista/XP/2000, Mac and Linux operating systems. Recommended use - WD Black hard drives are tested and recommended for use in PCs, high-performance workstations and computers.* *Business critical RAID environments – Please consider WD Red NAS Hard Drives for all multi-bay consumer NAS environments with 1-5 bay chassis. For business critical RAID applications, please consider WD's enterprise hard drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing. WD Black hard drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications. Ideal for: ---------- * Power computing applications such as intensive photo or video editing * Maxed out gaming systems * Adding lots of storage in desktop PCs * Adding extra storage space for photos, videos and music Features at a glance * Industry-leading performance * 500 GB - 4 TB capacity * SATA 6 Gb/s interface * 7200 RPM * Dual processor technology You might also consider: ------------------------ 3.5-inch Internal Comparison Chart WD Blue ( http://www..com/dp/B0088PUEPK ) WD Green ( http://www..com/dp/B004RORMF6 ) WD Black ( http://www..com/dp/B00A2IM76K ) WD Red ( http://www..com/dp/B008JJLW4M ) WD VelociRaptor ( http://www..com/dp/B007VPGJIY ) Solid performance and reliability for everyday computing. Cool, quiet operation for efficient eco-conscious computing. Maximum performance for power computing. The right drive for home or small office NAS. High-performance storage for power users. Ideal for Family and business computing. Desktop PCs, secondary storage and external drives. Photo and video editing, and maxed out gaming systems. Specifically designed and tested for small office and home office, 1-5 bay NAS systems. Performance enthusiast systems and workstations. Capacity range 80 GB – 1 TB 320 GB – 3 TB 500 GB – 4 TB 1 TB – 3 TB 250 GB – 1 TB Interface SATA 6 Gb/s PATA 100 MB/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch Cache 8 MB – 64 MB 64 MB 32 MB – 64 MB 64 MB 64 MB Limited warranty 2-year 2-year 5-year 3-year 5-year Highest capacity Highest performance Photo/video editing Network Storage Systems