The Samsung 9100 Pro 1TB is the objective winner of this comparison, securing victories in four out of seven evaluated specifications. Its most significant technical advantage is its sequential write performance, which is 102% better than the alternative. By outperforming in a majority of the measured categories, this drive establishes itself as the superior option for users prioritizing raw technical efficiency and high-speed data handling capabilities over total storage volume.

Choose the Samsung 9100 Pro 1TB if your primary requirement is high-speed sequential write performance for demanding professional tasks. Conversely, select the Western Digital WD Black SN850X 4TB if your workflow necessitates massive storage space, as it offers a 300% advantage in capacity. While the former excels in speed-focused metrics, the latter is the clear choice for users who need to store large libraries of data on a single drive.