Expand your desktop PC with a high-speed cache of 16 MB and the large capacity of the Western Digital Caviar Blue 320 GB Internal Hard Drive. Providing a solid performance and reliability to meet the demand of constant operation, this SATA hard drive uses Advanced Format technology to increase media data format and allow for quick read/write seek time. The built-in Intelliseek technology helps reduce power consumption, vibration, and noise while optimizing the drive. Worry less about the wear and tear of the drive due to the no-ramp-load recording method, which keeps the recording head off the disk and improves long-term use. A powerful workhorse at 7,200 RPM, the Caviar is compatible with any computer that accepts 3 1/2-inch drives. Experience the difference of system upgrade with a powerful drive meant to take on the toughest handling.