The Corsair RM1000x (2024) is the objective winner of this comparison, securing more category wins than its counterpart. Its most impactful advantage is the inclusion of a 12VHPWR connector, which represents a 100% improvement over the Corsair RM850x. This feature provides a significant hardware advantage for modern system builds requiring native support for high-power graphics cards, establishing the 1000-watt model as the superior choice for users prioritizing current connectivity standards and higher power capacity.

Users should select the Corsair RM1000x (2024) if they require the 12VHPWR connector for their specific hardware configuration. Conversely, the Corsair RM850x remains a viable option for those who do not need that specific connector and prefer the 26% advantage in MSRP. Choosing between these two units depends entirely on whether your build necessitates the modern power delivery standard or if you prefer the cost efficiency offered by the lower-wattage model.