Please give users the option to control the fan on the graphics card when they unlock the driver to overclock from Overdrive in the CCC.
Put choices like automatic and manual. If you choose manual have a slider unlock that can control the fan speed. Right now my fans on my cards stay @ 25% regardless of temperature. It would be nice if they kicked up to 50-55% @ 75-80C. Have the fan slider effect the card that is selected in the drop down in the same manner you do for overclocking Crossfire. So if I am on the card in slot 0 or 1 the fan control would set that particular card.
You could make room for a long narrow fan contol box with a slider by moving the "lock" icon elsewhere in Overdrive panel. Perhaps even down into the "requested clocks" box at the bottom left.
Something like this-