The Western Digital WD Blue SN5000 4TB is the objective winner of this comparison, securing more individual specification victories than its counterpart. Its most significant advantage is its storage capacity, which is 100% better than the alternative. While the Western Digital WD Blue SN5000 2TB holds a notable lead in terms of MSRP, being 57% better in that specific category, the higher capacity model provides a more robust overall feature set based on the analyzed specifications.

Users who prioritize maximum storage space for large libraries or extensive file collections should select the Western Digital WD Blue SN5000 4TB to take advantage of its superior capacity. Conversely, those who are strictly focused on the initial cost of their purchase should opt for the Western Digital WD Blue SN5000 2TB. Choosing between these two drives depends entirely on whether your primary goal is to minimize upfront spending or to double your available storage volume.