The Samsung 9100 Pro 1TB is the objective winner of this comparison, having secured more individual specification victories than its competitor. The most impactful advantage offered by this drive is its sequential write speed, which outperforms the Western Digital WD Black SN8100 1TB by 21 percent. While the two drives tied in the majority of their tested categories, this significant lead in write performance establishes the Samsung 9100 Pro 1TB as the superior option for data-heavy tasks.

Users who prioritize high-speed write operations should choose the Samsung 9100 Pro 1TB to take advantage of its substantial performance lead. Conversely, the Western Digital WD Black SN8100 1TB remains a viable alternative for those who prefer a marginal 1 percent lead in sequential read speeds. Because the components tied in four out of seven categories, the decision rests primarily on whether your specific workload benefits more from the faster write capabilities or the slight read advantage.