I have tried a variety of versions of GPU Tweak including 2.2.8.1 but they all have issue with the 7970 Matrix Platinum.
I can't set a custom fan profile. It looks as though i can but it doesn't actually apply and the monitoring tool doesn't detect when the fans ramp up.
I have forked out £400 on this card yet cannot control the fans properly. Either 100% or Auto.
I would you other utilities such as after burner but it doesn't support the fan controller and doesn't allow me to change the voltage.
Not too happy.