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 identical performance characteristics across most metrics, the larger model offers a significant advantage in total storage space. Specifically, the Samsung 990 Pro 4TB with Heatsink provides a 300% increase in capacity, making it the superior choice for users who prioritize maximum data density over other considerations.

Users who require extensive storage for large libraries or professional workflows should select the Samsung 990 Pro 4TB with Heatsink to leverage its superior capacity. Conversely, the Samsung 990 Pro 1TB with Heatsink is the better option for budget-conscious buyers, as it holds a 63% advantage in MSRP. Choosing between these two drives depends entirely on whether your primary requirement is the massive storage volume of the larger unit or the lower cost of the smaller drive.