The Samsung 990 Pro 4TB is the objective winner of this comparison, securing victories in five out of seven measured specifications. Its most significant advantage over the competition is its storage capacity, which is 300% greater than that of the alternative. By offering substantially more space for data, this drive establishes itself as the superior option for users requiring high-volume storage solutions for their systems.

The Western Digital WD Blue SN580 1TB is the preferred choice for budget-conscious users, as it holds an 84% advantage in MSRP. Those prioritizing lower initial costs should select this drive for their builds. Conversely, the Samsung 990 Pro 4TB is the ideal selection for power users or professionals who require the maximum capacity provided by its superior technical specifications, regardless of the higher cost associated with its larger storage footprint.