The Samsung 9100 Pro 4TB is the objective winner of this comparison, securing more category wins across the evaluated specifications. Its most significant advantage over the competition is its storage capacity, which is 100% greater than that of the alternative. By offering double the space, this drive provides a substantial increase in total data volume for users who require extensive room for their files and applications.

Choose the Samsung 9100 Pro 4TB if your primary requirement is maximum storage capacity for large-scale projects or extensive media libraries. Conversely, the SK Hynix Platinum P51 2TB is the better option for budget-conscious buyers, as it holds a 46% advantage in MSRP. Select this drive if you prioritize a lower initial cost over the expanded storage space provided by the larger alternative.