The be quiet! Straight Power 12 850W is the objective winner of this comparison, securing more individual specification victories than its counterpart. While both units share several identical features, the most impactful advantage for the Straight Power 12 850W is its SATA connector count, which is 50% higher than that of the alternative. This provides a clear edge in connectivity for users managing multiple storage drives or peripheral devices within their system builds.

Users requiring extensive storage expansion should select the be quiet! Straight Power 12 850W to utilize its superior SATA connectivity. Conversely, the be quiet! Pure Power 13 M 1200W is the appropriate choice for those prioritizing raw power capacity, as it offers 41% more wattage than the other unit. Choosing between these two power supplies depends entirely on whether your specific build configuration demands a higher total power output or a greater number of internal drive connections.