The Corsair RM850x is the objective winner of this comparison, securing more individual specification victories than its successor. Its most impactful advantage is the inclusion of PCIe connectors, which offer a 50% improvement over the alternative. While both units share several identical specifications, the original model provides a more robust configuration for traditional hardware setups, making it the superior choice for users prioritizing these specific connectivity options over the newer design.

Users should choose the Corsair RM850x if they require the increased capacity of its PCIe connectors for their current system configuration. Conversely, the Corsair RM850x (2024) is the better option for those who specifically need the 12VHPWR connector, which provides a 100% advantage in that category. Selecting between these two power supplies depends entirely on whether your build relies on traditional PCIe cabling or the newer 12VHPWR standard for modern hardware compatibility.