The be quiet! Dark Power Pro 13 1300W is the objective winner of this comparison, securing more individual specification victories than its counterpart. Its most significant advantage is its total power output, which provides 53% more wattage than the alternative. This increased capacity serves as the primary differentiator between the two units, establishing the higher-tier model as the more robust option for demanding hardware configurations that require substantial power delivery.

Users building high-end systems with multiple power-hungry components should choose the be quiet! Dark Power Pro 13 1300W to leverage its superior wattage. Conversely, the be quiet! Straight Power 12 850W is the better choice for budget-conscious builders who do not require the extra capacity, as it offers a 64% advantage in MSRP. Selecting between these two units depends entirely on whether your specific build necessitates the higher power ceiling or the lower cost.