The Samsung 990 Pro 4TB with Heatsink is the objective winner of this comparison, securing more individual specification victories than its counterpart. While both drives share several identical performance metrics, the larger model provides a significant advantage in storage space. Specifically, the Samsung 990 Pro 4TB with Heatsink offers a 300% increase in capacity, which stands as its most impactful improvement over the smaller drive.

Users who prioritize maximum storage volume for large libraries or professional workloads should choose the Samsung 990 Pro 4TB with Heatsink for its superior capacity. Conversely, the Samsung 990 Pro 1TB is the better option for budget-conscious buyers, as it holds a 71% advantage in MSRP. Selecting between these two drives depends entirely on whether your primary requirement is the expansive storage of the larger model or the cost efficiency of the smaller version.