OWC Mercury Electra 6G 4 TB

This is a 4000GB 2.5" SSD on the SATA interface. At roughly $0.03 per gigabyte it sits in the high-end tier. Sequential throughput tops out at 550 MB/s reads and 520 MB/s writes. SATA throughput caps near 550 MB/s — fine for game libraries and backups, slower for heavy scratch work.

Its $116.75 price tag places it squarely in high-end territory. PlanMyPC's builder flags compatibility problems automatically and tracks the latest drive deals from multiple stores. Warranty coverage follows OWC'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.