GeForce GTX 200 GPU series have four different performance/power modes:
– Idle/2D power mode: approx. 25W
– Blu-ray DVD playback mode: approx. 35W
– Full 3D performance mode: varies – worst case TDP 236W
– HybridPower mode: effectively 0W

Using a HybridPower-capable nForce motherboard, such as those based on nForce 780a or 790i chipsets, a GeForce GTX 200 GPU can be fully powered off when not performing intensive graphics operations and graphics output can be handled by the motherboard’s IGP.