The Western Digital WD Black SN8100 4TB is the objective winner of this comparison, securing victory in five out of seven measured specifications. Its most impactful advantage is its sequential read speed, which outperforms the Samsung 970 EVO Plus 1TB by 326 percent. While the Samsung 970 EVO Plus 1TB maintains a lead in MSRP with an 87 percent advantage, the superior performance metrics of the Western Digital drive establish it as the more capable hardware option.

Users prioritizing high-speed data access and maximum storage capacity should choose the Western Digital WD Black SN8100 4TB for their system. Conversely, the Samsung 970 EVO Plus 1TB is the appropriate selection for budget-conscious buyers who prioritize a lower MSRP over the performance gains offered by the alternative. Selecting between these two drives depends entirely on whether your primary requirement is the significant speed advantage of the Western Digital model or the cost efficiency of the Samsung.