The SK Hynix Platinum P51 2TB is the objective winner of this comparison, securing victory in five out of seven measured specifications. Its most significant advantage over the competition is its storage capacity, which is 100% better than that of the alternative. While the Samsung 990 Pro 1TB holds a 58% advantage in MSRP, the superior capacity offered by the SK Hynix Platinum P51 2TB makes it the more capable drive across the majority of technical metrics.

Users who prioritize maximum storage space for large libraries or extensive file collections should choose the SK Hynix Platinum P51 2TB. Conversely, the Samsung 990 Pro 1TB is the better option for budget-conscious buyers who prioritize a more favorable MSRP. By selecting based on these specific advantages, users can align their purchase with either the higher capacity of the SK Hynix drive or the lower cost of the Samsung model.