PowerSpec power supplies provide the ideal balance of price and performance. The PS500WF provides 500W of continuous power. STABILITY: This power supply features 500W of output power, adopts active PFC design with a single 12V output rail providing strong and stable power to computers. It complies with Intel ATX 12V standards. The sufficient and stable current fully supports SLI & CrossFire Systems. EFFICIENCY: This switching power supply obtains 80 certification, offering 80% minimum efficiency at 50% load. DURABILITY: Japanese made premier capacitors ensure longer lifespan and no more explosion & leakage. Backed by 5 year warranty and customer service support. QUIET & COOL: Low-noise but high-flow 120mm diameter fan for efficient cooling, to solve potential thermal and noise problem for the system and computer power supply. MAXIMUM SAFETY: Universal AC 115-230V / 8A input with 50-60Hz frequency for wide ranging use, protect your components and data from unexpected unstable voltage damage. Heavy duty protections, including OVP, UVP, OPP, SCP.