SilverStone ATX12V/EPS12V 1000W 80+ Gold PFC Power Supply ST1000-G (Black) 80Plus Gold certification with high efficiency 87%~90% at 20%~100% loading 100% modular cables 1000W (1100W peak power) 24hour fully continuous power output with 40 degree Celcius operating temperature Class-leading single +12V rail with 62A Strict 3% voltage regulation and low ripple & noise