The Western Digital WD Black SN850X 2TB is the objective winner of this comparison, securing victories in five out of six measured specifications. Its most significant advantage is its sequential read speed, which is 1204% better than that of the alternative. By outperforming the competition across the vast majority of technical categories, this drive establishes itself as the superior option for users prioritizing raw hardware capabilities and high-end performance metrics in their storage solutions.

Choose the Western Digital WD Black SN850X 2TB if you require maximum data transfer speeds and high-capacity storage for demanding tasks. Conversely, select the Western Digital WD Blue SA510 500GB if your primary goal is minimizing your initial investment, as it holds a 71% advantage in MSRP. This smaller drive is the logical choice for budget-conscious users who do not require the high-performance sequential read speeds offered by the more advanced model.