OWC Mercury Extreme Pro 6G 4 TB

This is a 4000GB 2.5" SSD on the SATA interface. At roughly $0.25 per gigabyte it sits in the premium tier. Sequential throughput reaches 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.

Expect to pay around $999.99, which lands it among premium options. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current drive prices across retailers. OWC backs the product through its standard warranty channels; check the listing for region-specific terms. Every published spec is tabulated below, and compatibility against your current part list is checked automatically.