The Corsair RM1200x SHIFT is the objective winner of this comparison, securing more total spec victories than its competitor. Its most impactful advantage is the inclusion of a 12VHPWR connector, which represents a 100% improvement over the alternative. This feature provides a significant hardware edge for modern systems requiring native support for high-power graphics cards, establishing the unit as the more versatile and future-proof option based on the provided technical specifications.

Users prioritizing modern connectivity and high-wattage support should choose the Corsair RM1200x SHIFT to ensure compatibility with the latest hardware standards. Conversely, the EVGA SuperNOVA 850 G6 is the better choice for budget-conscious builders, as it holds a 50% advantage in MSRP. Selecting between these two power supplies depends entirely on whether your build requires the advanced connector interface or if you prefer to prioritize the lower cost offered by the EVGA unit.