The Samsung 9100 Pro 8TB is the objective winner of this comparison, securing victories in five out of seven measured specifications. Its most significant advantage is its storage capacity, which is 300% greater than that of the alternative. By offering a vastly larger footprint for data, this drive establishes itself as the superior option for users who prioritize high-volume storage density over other considerations.

Users who require maximum space for extensive libraries or professional workloads should choose the Samsung 9100 Pro 8TB for its superior capacity. Conversely, those operating under a stricter budget should opt for the Western Digital WD Black SN850X 2TB, as it holds an 84% advantage in MSRP. Selecting between these two drives depends entirely on whether your primary requirement is the expansive storage volume of the former or the cost-efficiency of the latter.