I have the following situation: A NVidia GTX 260, in P0 State the power supply can't give enough power so we decided to let it in P8 state. But now we want a bit more performance from the P8 state. We could achieve this by underclocking the P0 state or by overclocking the P8 state.
I can modify the GPU-Clock, Memory-Clock, Shader-Clock but not the Voltage.
So the question is what's better and how risky is it regarding physical damage to the card.
Settings for P0: GPU-Clock: 625 MHz Memory-Clock: 1100 MHz Shader-Clock: 1348 MHz Voltage: 1.120 V
Settings for P8: GPU-Clock: 400 MHz Memory-Clock: 250 MHz Shader-Clock: 799 MHz Voltage: 1.050 V
I thought adjusting it to: GPU-Clock: 500 MHz Memory-Clock: 800 MHz Shader-Clock: 1100 MHz
Used program: NVIDIA Inspector 1.9.7.3
The main question is what's better overclock frequency with lower voltage, or underclock frequency with higher voltage, i want to achieve something between P0 and P8 values without harming the physical hardware.