The Corsair SF850 is the objective winner of this comparison, securing more category victories than the Corsair RM850x. The most significant advantage for the Corsair SF850 is its inclusion of a 12VHPWR connector, which represents a 100% improvement over the alternative. While the Corsair RM850x maintains a 30% advantage in MSRP, the superior connectivity offered by the winning unit makes it the more modern and versatile choice for current hardware configurations.

Users prioritizing budget efficiency should select the Corsair RM850x, as it offers a 30% better MSRP compared to the competition. Conversely, those building systems that require the 12VHPWR connector should choose the Corsair SF850. By opting for the latter, builders gain essential compatibility for modern components that rely on this specific interface, ensuring the power supply remains relevant for current and future hardware standards.