Corsair professional ax860 fully modular 80 plus platinum 860w psu a new more efficient version of the awarding winning ax series power suppliesr r platinum efficiency and silent fanless moder the corsair ax860 power supply runs quieter generates minimal excess heat and its earned the 80 plus platinum seal of approval your guarantee that youre making the right choice for smart efficient power delivery because the ax860 is so efficient it operates without the fan even spinning at low and