The be quiet! Straight Power 12 850W is the objective winner of this comparison, securing more wins across the evaluated specifications. Its most significant advantage is the inclusion of SATA connectors, which provides a 125% increase in capacity compared to the alternative. This superior connectivity makes the be quiet! Straight Power 12 850W the more versatile option for systems requiring extensive peripheral support, ensuring that users have ample room for multiple storage drives and accessories without needing additional adapters.

Users who prioritize system expandability and require a high number of SATA connections should choose the be quiet! Straight Power 12 850W for their build. Conversely, the DeepCool PX850G is the better choice for budget-conscious builders, as it offers a 31% advantage in MSRP. Those who do not need the extra connectivity provided by the be quiet! unit can opt for the DeepCool PX850G to take advantage of its more favorable pricing while still meeting their power requirements.