Thermaltake Toughpower Grand 850W TPG-850M SLI & CrossFire X Ready ATX12V V2.3 SSI EPS12V 2.92 80PLUS Gold Certified Modular 50C Continuous Power FanDelayCool Active PFC Power Supply. 80PLUS Gold certified to provide industry-leading 87%-93% power efficiency at 20%-100% load under real-world operating environment. 850W of true and continuous power even under 50C environment and non-stop operation. Proprietary 140mm dual-ball bearing frameless fan to enable accelerated airflow and reduced air-rebounding noise to cut down overall noise level by as much as 3%. Highest quality Japanese electrolytic & solid state capacitors with low equivalent series resistance (ESR) enable unparalleled durability and reliability. Dedicated DC-DC converters for 3.3V and 5V outputs. Further enhances overall system stability and efficiency. Robust dual 12V rails with 125A capable of delivering 100% of power supply's 1200W continuous power. FanDelayCool - an proprietary technology that enables the power supply fan to continue to operate even after the computer has been shutoff to ensure all critical components within the power supply are properly cooled to prolong life expectancy and prevent performance deterioration.