Thermaltake PS-TPD-0850FNFAGU-P Toughpower GF1 TPD-850AH2FLG 850W Power SupplyProduct Description: Type: Digital Watts: 850W Max Output Capacity: 850W PFC (Power Factor Correction): Active PFC Power Good Signal: 100 150 msec Hold Up Time: > 17msec Input Current: 15A 8A Input Frequency Range: 50Hz 60Hz Input Voltage: 100 240V? Operating Temperature: +5C to +40C Operating Humidity: 20% to 85% Storage Temperature: 40C to +55C Storage Humidity: 10% to 95% Cooling System: 12cm FDB Fan Efficiency: Meet 80 PLUS Gold at 115Vac input.