The Samsung 9100 Pro 2TB is the objective winner of this comparison, securing victory in five out of seven evaluated specifications. Its most impactful advantage is its capacity, which is 100% greater than that of the alternative. By offering double the storage space, this drive provides a significant hardware lead that outweighs the performance of the smaller model in the majority of the measured technical categories.

Users who prioritize maximum storage volume for large libraries or extensive data sets should choose the Samsung 9100 Pro 2TB. Conversely, the Samsung 990 Pro 1TB is the better option for budget-conscious buyers, as it holds a 56% advantage in MSRP. Selecting between these two drives depends entirely on whether your primary requirement is the superior capacity offered by the larger model or the cost efficiency provided by the smaller one.