Western Digital Red SA500 4 TB

This is a 4000GB 2.5" SSD on the SATA interface. Sequential throughput tops out at 550 MB/s reads and 520 MB/s writes. At roughly $0.21 per gigabyte it sits in the premium tier. SATA throughput caps near 550 MB/s — fine for game libraries and backups, slower for heavy scratch work.

Its $849.99 price tag places it squarely in premium territory. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current drive prices across retailers. Warranty coverage follows Western Digital's standard policy — confirm regional terms on the listing. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.