The Western Digital WD Black SN8100 4TB is the objective winner of this comparison, securing five out of seven total specification categories. Its most significant advantage over the competition is its storage capacity, which is 300% better than the alternative. While the Samsung 990 Pro 1TB with Heatsink manages to win one category and ties in another, it cannot match the superior volume of the winning drive.

Choose the Western Digital WD Black SN8100 4TB if your primary requirement is maximum storage space for large libraries or extensive data sets. Conversely, the Samsung 990 Pro 1TB with Heatsink is the better selection for budget-conscious users, as it holds a 75% advantage in MSRP. Select the former for capacity-heavy workloads or the latter if you prioritize a lower initial cost for your storage solution.