The Western Digital WD Blue SN5000 2TB is the objective winner of this comparison, securing four out of six total spec categories. Its most significant advantage over the Western Digital WD Blue SA510 1TB is its sequential write performance, which is 842% better. While the SA510 holds a 35% advantage in MSRP, the SN5000 dominates the technical specifications, providing a substantial leap in data writing capabilities that defines its superior standing in this head-to-head evaluation.

Users prioritizing maximum storage capacity and high-speed write performance should choose the Western Digital WD Blue SN5000 2TB for their system. Conversely, the Western Digital WD Blue SA510 1TB remains the appropriate selection for budget-conscious buyers who prioritize a lower MSRP over the advanced write speeds and increased capacity offered by its counterpart. Selecting between these two drives depends entirely on whether your primary requirement is cost savings or significantly faster data handling.