We review the Corsair RM750i GOLD power supply. This silent RMi series PSU comes Gold certified, that means it’s 90% efficient at 50% load. Efficiency matters. The PSU itself is fully modular, for most of you with a side panel window in their chassis a must really as you’ll want modular cables. The new PSU also improved on the audibility front and through Corsair LINK software you can even configure the 12V rails in a single and multi rails.