Cooler Master eXtreme Power Series 460W ATX Form Factor 12V V2.01 Power Supply - (RS460-PMSRA3-US) Compliance with the newest Intel standard ATX 12V V2.3 More than 70% efficiency at typical load operation Higher reliability (MTBF &gt; 100,000 hours) Super silent operation with intelligent fan speed control Multiple protection design (OVP/OCP/OPP/SCP)