The be quiet! Pure Power 13 M 850W and the DeepCool PX1200G are tied in their objective performance specifications, resulting in no clear winner. The be quiet! Pure Power 13 M 850W holds a significant advantage in MSRP, which is 24% better than the alternative. Conversely, the DeepCool PX1200G offers a superior modular design, providing a 50% advantage in that specific category compared to the other unit.

Choose the be quiet! Pure Power 13 M 850W if your primary goal is to optimize your budget, as its lower MSRP provides the best value based on the provided data. Select the DeepCool PX1200G if you prioritize a modular configuration for your build, as it offers a substantial advantage in that area. Both units provide equivalent performance across the remaining measured specifications, allowing you to decide based on these two distinct priorities.