Western Digital Caviar Blue 640GB hard drive (part number WD6400AAKS-00H2B0) is a 3.5-inch SATA drive rated for 7200 RPM with 16MB cache and 3Gb/s sustained throughput. The Caviar Blue line targets general-purpose desktop and light server storage applications where capacity and reliability matter more than enterprise performance. Compatible with standard SATA controllers and commonly used in older workstations, external enclosures, and NAS configurations. As a mechanical drive, it suits sequential workloads and archival storage better than high-IOPs environments. Tested and guaranteed; available via quote.
