The Western Digital WD Black SN850X 4TB is the objective winner of this comparison, securing three out of five total specification categories. Its most impactful advantage is a 3742% higher sequential read speed compared to the Seagate Barracuda 1TB. While the Seagate Barracuda 1TB holds a significant 89% advantage in MSRP, the superior performance metrics of the Western Digital WD Black SN850X 4TB make it the more capable drive across the majority of measured technical fields.

Users prioritizing maximum data throughput and high-capacity storage should select the Western Digital WD Black SN850X 4TB for its substantial lead in sequential read performance. Conversely, those operating on a strict budget who require a more affordable storage solution should choose the Seagate Barracuda 1TB. The decision rests on whether the user values the significant cost savings offered by the Seagate drive or the massive speed improvements provided by the Western Digital alternative.