OCZ StealthXStream2 600W ATX12V v2.2/ EPS12V Power Supply 600W Power Supply ATX12V v2.2 and EPS12V, Main connector: 20+ 4-pin ATX 80+ Certified, Overvoltage/Overcurrent/Short-Circuit protection Active PFC, MTBF: 100,000 hours OCZ Power Whisper Technology, 120mm ball-bearing fan