The Samsung 9100 Pro 4TB is the objective winner of this comparison, securing victories in six out of seven evaluated specifications. Its most significant advantage over the competition is its storage capacity, which is 300% greater than that of the alternative. By offering substantially more space for data, this drive establishes itself as the superior option for users prioritizing high-volume storage needs and technical performance across the majority of measured metrics.

The Western Digital WD Blue SN580 1TB is the recommended choice for budget-conscious buyers, as it holds an 89% advantage in MSRP. Users who require a smaller storage footprint and prioritize a lower initial cost should select this drive. Conversely, the Samsung 9100 Pro 4TB is the ideal selection for power users or professionals who require maximum capacity and superior technical specifications for their primary storage solution.