The Corsair RM1200x SHIFT is the objective winner of this comparison, securing more spec victories than the Seasonic Focus GX-750. The most impactful advantage for the Corsair RM1200x SHIFT is its inclusion of a 12VHPWR connector, which represents a 100% improvement over the alternative. This feature provides a critical hardware advantage for modern system builds that require direct power delivery to high-end components, establishing it as the superior option based on the provided technical specifications.

Users prioritizing modern connectivity and high-wattage support should select the Corsair RM1200x SHIFT to ensure compatibility with current hardware standards. Conversely, the Seasonic Focus GX-750 is the better choice for budget-conscious builders, as it holds a 62% advantage in MSRP. Choosing between these two units depends entirely on whether your build requires the advanced connector interface provided by the former or the cost-effective pricing offered by the latter.