The Fractal Design Ion+ 2 Platinum 860W and the Seasonic Focus GX-850 are objectively tied, as both units secure two spec wins with five categories resulting in a draw. The most impactful advantage for the Fractal Design Ion+ 2 Platinum 860W is its efficiency, which is 25% better than the competitor. Conversely, the Seasonic Focus GX-850 holds a significant lead in connectivity, offering 67% more SATA connectors than the Fractal Design unit.

Choose the Fractal Design Ion+ 2 Platinum 860W if your primary priority is power efficiency for your system build. Alternatively, select the Seasonic Focus GX-850 if your configuration requires a high number of SATA connections for storage drives or peripheral devices. Both power supplies offer comparable performance across the remaining technical specifications, so your final decision should rely entirely on whether you value superior energy efficiency or expanded SATA connectivity for your specific hardware needs.