The Crucial T700 4TB with Heatsink is the objective winner of this comparison, securing victories in six out of seven evaluated specifications. Its most significant advantage is its storage capacity, which is 300% greater than that of the alternative. This substantial lead in total space makes it the superior choice for users requiring extensive room for large files and high-density data storage, outperforming the Western Digital WD Blue SN580 1TB across the majority of technical metrics.

The Western Digital WD Blue SN580 1TB is the preferred option for budget-conscious buyers, as it holds a 90% advantage in MSRP. Those prioritizing cost efficiency over total capacity should select this drive. Conversely, the Crucial T700 4TB with Heatsink is the ideal component for power users who need the maximum available storage volume and are less concerned with the initial purchase cost. Choose based on whether your priority is total capacity or lower entry pricing.