The Seasonic Prime TX-1300 ATX 3.1 is the objective winner of this comparison, securing three spec victories against one for the Corsair SF850. The most significant advantage held by the Seasonic Prime TX-1300 ATX 3.1 is its wattage capacity, which is 53% higher than that of its competitor. While the Corsair SF850 offers a 47% better MSRP, the superior power output of the Seasonic unit makes it the more robust choice for high-demand systems.

Users should select the Seasonic Prime TX-1300 ATX 3.1 if their primary requirement is maximum wattage for power-intensive hardware configurations. Conversely, the Corsair SF850 is the better option for budget-conscious builders who prioritize a more favorable MSRP over the higher power ceiling provided by the Seasonic alternative. Choosing between these two units depends entirely on whether your specific build necessitates the increased power capacity or if you prefer the cost efficiency of the lower-wattage model.