Fan Speed Adjusts master GPU fan speed. Hints: - When GPU settings synchronization mode is enabled in tab in advanced properties, any changes applied to the master GPU are also applied to all similar GPUs installed in the system. - Fan speed control is not available if graphics card is not equipped with fan controller chip and (or) controllable cooling system. - button must be unchecked in order to control the fan directly. - When this slider is focused, you may use cursor keys on your keyboard to finetune the speed. - You may click the adjacent edit field to directly type in a desired speed. - You may disable user interface tooltips via tab in advanced properties.