The Western Digital WD Black SN8100 4TB is the objective winner, securing victories in six out of seven measured specifications. Its most significant technical advantage is a sequential write speed that is 400% better than the competition. While the Kingston NV2 2TB manages to win a single category, the superior performance metrics across the board establish the Western Digital drive as the more capable hardware option for high-demand storage tasks.

Choose the Western Digital WD Black SN8100 4TB if your primary requirement is high-speed sequential write performance for intensive data operations. Conversely, the Kingston NV2 2TB is the appropriate selection for users prioritizing a lower MSRP, as it offers an 85% advantage in that specific category. Select the former for maximum technical capability or the latter if your budget constraints are the most critical factor in your storage decision.