If you're running a high-performance system, you need to have a high-performance power supply. The ATXPOW500PRO Professional Power Supply delivers 500 Watts of clean, reliable power, enough to feed today's power-hungry 3 GHz (or higher) CPUs and multi-hard drive systems. Guaranteed compatible with high-end Intel and AMD processors, the professional-quality ATXPOW500PRO is the reliable way to ensure that maximum power is delivered to your computer's demanding components. The smart dual ball-bearing fan automatically adjusts its speed to provide whisper-quiet operation while keeping your system stable and cool. The ATXPOW500PRO comes with a TX3 fan sensor and is Serial ATA ready with two SATA connectors.