Platinum efficiency, fully modular and virtually silent CORSAIR HX series power supplies give you extremely tight voltage regulation, quiet operation, Platinum-certified efficiency, and a fully modular cable set. Built with all Japanese 105掳C capacitors, they鈥檙e a great choice for high performance PCs where reliability is essential. Quiet, efficient operation 80 PLUS Platinum efficiency reduces operating cost and excess heat, and Zero RPM fan mode ensures virtual silence at low and medium loads. Zero RPM Fan Mode Since the fan doesn鈥檛 turn on until it鈥檚 needed, you鈥檒l enjoy virtually silent operation at low and medium loads.