Western Digital Caviar Blue 320 GB

This is a 320GB 3.5" HDD on the SATA interface. At roughly $0.22 per gigabyte it sits in the mid-range tier. Sequential throughput reaches 550 MB/s reads and 520 MB/s writes, backed by 16MB of cache. SATA throughput caps near 550 MB/s — fine for game libraries and backups, slower for heavy scratch work.

Expect to pay around $70.00, which lands it among mid-range options. Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Support and warranty service run through Western Digital, with terms that vary by region. Every published spec is tabulated below, and compatibility against your current part list is checked automatically.