The SK Hynix Platinum P51 2TB is the objective winner of this comparison, securing five out of seven total specifications. Its most significant advantage over the competition is its sequential write speed, which is 123% better than that of the Kingston KC3000 1TB. While the latter holds its own in one area and ties in another, the former demonstrates clear technical superiority across the majority of the measured performance categories.

Users who prioritize maximum storage capacity and the fastest sequential write speeds should choose the SK Hynix Platinum P51 2TB for their system. Conversely, the Kingston KC3000 1TB is the better option for budget-conscious buyers, as it maintains a 67% advantage in MSRP. Selecting between these two drives depends entirely on whether your primary requirement is the superior write performance of the larger drive or the cost efficiency of the smaller one.