The Samsung 9100 Pro 1TB is the objective winner of this comparison, securing more category victories across the evaluated specifications. Its most significant performance advantage is a 21% lead in sequential write speeds compared to the Western Digital WD Black SN8100 1TB. While both drives share identical ratings in four of the seven measured fields, the superior write capability of the Samsung 9100 Pro 1TB provides a clear technical edge in this head-to-head assessment.

Users who prioritize write-heavy workloads should choose the Samsung 9100 Pro 1TB to leverage its substantial advantage in sequential write performance. Conversely, the Western Digital WD Black SN8100 1TB remains a viable alternative for those who prefer the minor 1% lead it holds in sequential read speeds. Because both components are tied in the majority of tested specifications, the decision rests primarily on whether your specific usage patterns favor faster write operations or the slight read advantage.