The Seagate Barracuda 2TB and the Western Digital WD Black SN770 1TB represent a tie in this objective comparison, as each component secures two spec victories with one tie. The Seagate Barracuda 2TB offers the most significant advantage in terms of capacity, providing 100% more storage space than its competitor. Conversely, the Western Digital WD Black SN770 1TB delivers a massive performance lead, boasting a sequential read speed that is 2611% faster than the alternative.

Users who prioritize maximum storage volume for large file libraries should choose the Seagate Barracuda 2TB. This drive is ideal for those who need to house extensive datasets where total capacity is the primary requirement. Alternatively, those who require high-speed data access and rapid sequential read performance should select the Western Digital WD Black SN770 1TB. This option is better suited for users who value speed and responsiveness over the total amount of available storage space.