Does a Case Fan Increase Power Consumption
Most 120mm and 140mm case fans draw 0.5W to 6W, so five fans stay near 20W. RGB lighting can draw two to three times what the motor does.
Articles related to Power Efficiency.

Most 120mm and 140mm case fans draw 0.5W to 6W, so five fans stay near 20W. RGB lighting can draw two to three times what the motor does.