The be quiet! Straight Power 12 850W and the Corsair HX1500i result in an objective tie across the evaluated specifications. While both units share five identical metrics, they diverge significantly in their primary strengths. The be quiet! Straight Power 12 850W holds a 54% advantage in MSRP, making it the more cost-effective option, whereas the Corsair HX1500i provides a 76% advantage in total wattage capacity for high-demand systems.

Choose the be quiet! Straight Power 12 850W if your build requires a standard power budget and you prioritize a lower MSRP. Conversely, select the Corsair HX1500i if your hardware configuration demands significantly higher wattage output. Your decision should depend entirely on whether your priority is minimizing initial costs or securing the maximum power capacity available between these two units.