The Corsair SF850 is the objective winner of this comparison, securing more category wins across the evaluated specifications. Its most significant advantage is its efficiency, which is 25% better than that of the competition. While both units share several identical performance metrics, the Corsair SF850 establishes its superiority through this notable gain in power conversion effectiveness, making it the more refined choice for users prioritizing energy management and overall technical efficiency in their system builds.

Choose the Corsair SF850 if your primary goal is maximizing energy efficiency for a standard high-performance build. Conversely, select the Thermaltake Toughpower GF3 1200W if your hardware configuration requires a higher power ceiling, as it offers 41% more wattage than the alternative. By weighing the importance of power capacity against the benefits of improved efficiency, you can select the unit that best aligns with your specific power delivery requirements and hardware demands.