The Western Digital WD Black SN850X 4TB is the objective winner of this comparison, securing more spec victories than its competitor. While the Samsung 980 Pro 2TB holds a 47% advantage in MSRP, the Western Digital WD Black SN850X 4TB provides the most impactful benefit with a 100% advantage in total storage capacity. This significant difference in available space makes the Western Digital drive the superior choice for users prioritizing high-volume data retention.

Choose the Western Digital WD Black SN850X 4TB if your primary requirement is maximum storage capacity for large libraries or extensive file collections. Conversely, select the Samsung 980 Pro 2TB if your purchasing decision is driven by the MSRP advantage. By focusing on these specific strengths, you can align your storage selection with either the need for double the capacity or the benefit of a more favorable list price.