Seagate Exos 7E8 512n 4 TB

A 4000GB 3.5" HDD on the SATA interface. Sequential throughput reaches 550 MB/s reads and 520 MB/s writes, backed by 256MB of cache. At roughly $0.06 per gigabyte it sits in the high-end tier. SATA throughput caps near 550 MB/s — fine for game libraries and backups, slower for heavy scratch work.

Its $221.89 price tag places it squarely in high-end territory. PlanMyPC's builder flags compatibility problems automatically and adds the part's price to your build total. Warranty coverage follows Seagate's standard policy — confirm regional terms on the listing. Every published spec is tabulated below, and compatibility against your current part list is checked automatically.