So I've got a GT240 DDR3 as my Physx (for those of you wondering where my 9600GSO went, it overheated) and I cant for the life of me figure out how to adjust the fan speed on the card. When MSI Afterburner is set on the GT240, I can adjust core clock and all, but when I change the fan speed, nothing happens. Any help is appreciated, since it is a quite annoying noise.
More aboutphysx card speed
make sure to untick auto mode on the fan speed slider, the fan speed will only change once you hit apply to the level you have set.