Count on adding performance and reliability to your CPU when installing a new internal hard drive. Sturdy, fast, and complete with fantastic data integrity, the Western Digital Caviar 2TB HDD is only 3.5 inches, so installing this piece of hardware is a cinch in most systems. The WD20EARX model is from a trusted and well-known manufacturer of storage devices, so you know your data is safe and secure on this drive. The 6 GB per second data transfer rate makes sharing all of your media files, such as photos, music, and movies, fast and easy, while the 7,200 RPM lets you access your own files quickly.