The Thermaltake Toughpower GF3 850W is the objective winner of this comparison, securing more individual specification victories than its competitor. Its most significant advantage over the Corsair RM850x is the inclusion of a 12VHPWR connector, which represents a 100% improvement in that specific category. While the Corsair RM850x offers a 200% advantage in the number of PCIe connectors provided, the overall technical lead remains with the Thermaltake unit based on the total count of superior specifications.

Users planning to build a system with modern hardware requiring a 12VHPWR connection should choose the Thermaltake Toughpower GF3 850W for its native support of that standard. Conversely, the Corsair RM850x is the better selection for builders who prioritize a higher quantity of traditional PCIe connectors for their specific component configuration. Selecting between these two power supplies should be determined by whether your build necessitates the latest connector standard or a greater volume of standard PCIe cables.