The Western Digital WD Black SN8100 4TB is the objective winner of this comparison, securing more individual specification victories than its competitor. While the Crucial T705 2TB holds a significant 60% advantage in MSRP, the Western Digital WD Black SN8100 4TB provides the most impactful benefit with a 100% increase in total storage capacity. This substantial difference in available space makes the latter the superior choice for users prioritizing volume over the cost-efficiency offered by the former.

Choose the Western Digital WD Black SN8100 4TB if your primary requirement is maximum storage capacity for large datasets or extensive media libraries. Conversely, select the Crucial T705 2TB if you are operating under a stricter budget and prefer the 60% better MSRP. By weighing the importance of total capacity against the cost-saving benefits of the lower price point, you can determine which of these two storage options best aligns with your specific build requirements.