New icue update lets you control the fan speed and see the wattage on your gpu.. (not sure about older cards but it works on 30 FE series) Kind of cool they
iCUE Software | Drivers | Software | CORSAIR
How to: Set up fan control and system lighting in iCUE – Corsair
Amazon.com: CORSAIR iCUE COMMANDER CORE XT, Digital Fan Speed and RGB Lighting Controller : Electronics
Lufter in ICUE Software konfiguieren - iCUE Software (German) - Corsair Community