CORSAIR RM650x series power supplies are built with the highest quality components to deliver 80+ Gold efficient power to your PC. Using only Japanese 105 DegreeC capacitors, users can depend on an RM650x PSUs' long life and reliability, backed by a ten-year warranty. Zero RPM Mode means an RM650x series PSU is virtually silent at low and medium loads, and even at maximum power, a low noise fan ensures quiet operation. Fully modular cables make PC builds and upgrades easy, as you only need to install the cables your system requires. Quiet, efficient and dependable, an RM650x PSU has everything you need to power your high high-performance PC for years to come. Tech Support # 1-888-222-4346 opt #1.