HEC Orion HP585DR 585W Power Supply, Features: Compatible with Intel Pentium 4 and AMD, Dual +12V rails provide plenty of power sources to support high end systems, Super Quiet Technology: Smart Fan Control Function Keeps Noise Level Under 22dBA, Excellent Protection Functions Provide Maximum Reliability: OVP (Over-Voltage Protection), UVP (Under-Voltage Protection), OPP (Over-Power Protection), SCP (Short-Circuit Protection),Over and under voltage protection, High Efficiency (>75%), High Energy Power With Low Ripple Noise, 100% Hi-Pot, Chroma & Burn-in Function Tested