There is no difference in power consumption based on the camera`s frame rate. The focal plane array runs at full rate even though the video output rate is reduced. The automatic gain control (AGC) and non-uniformity compensation (NUC) algorithms also run at full rate.
For Tau2 and Quark2 cameras there is an option for the power to be reduced by about 10% if the analog video is switched off, and digital video only is used. The analog video can be turned off using the Camera Control GUI.
Flir Controller GUI