Hitachi Travelstar 7K500 320 GB

This is a 320GB 2.5" HDD on the SATA interface. At roughly $0.15 per gigabyte it sits in the budget tier. Sequential throughput tops out at 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 $49.00, which lands it among budget options. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current drive prices across retailers. Support and warranty service run through Hitachi, with terms that vary by region.