Samsung Spinpoint M7E 640 GB

This is a 640GB 2.5" HDD on the SATA interface. Sequential throughput tops out at 550 MB/s reads and 520 MB/s writes, backed by 8MB of cache. At roughly $0.07 per gigabyte it sits in the budget tier. SATA throughput caps near 550 MB/s — fine for game libraries and backups, slower for heavy scratch work.

At $47.10 it sits in the budget drive bracket. Use the PlanMyPC system builder to verify it works alongside your other components and to keep a running tally of the cost. Samsung backs the product through its standard warranty channels; check the listing for region-specific terms.