Below you see the MOSFET Legs to measure the SouthBridge Voltage (VSB) and
Memory Voltage from::

5 ASUS P5N32 SLI SE Deluxe Pencil Voltage Mods

Default VSB is 1.5v and default VMem is 1.85v.

At the same area, mod VFSB, VSB and VMem as seen below:

3 ASUS P5N32 SLI SE Deluxe Pencil Voltage Mods

To increase VFSB, solder a 20K Ohms Variable Resistor to the point marked above,
set at maximum resistance, with the other leg of VR connected to Ground. Reduce
Resistance to increase voltage. Alternatively, pencil the resistor in the green
box to increase voltage. Go down slowly, about 20 ohms at a time, to increase
voltage.

To increase VSB, solder a 20K Ohms Variable Resistor to the point marked above,
set at maximum resistance, with the other leg of VR connected to Ground. Reduce
Resistance to increase voltage. Alternatively, pencil the resistor in the green
box to increase voltage. Go down slowly, about 20 ohms at a time, to increase
voltage.

To increase VMem, solder a 10K Ohms Variable Resistor to the point marked above,
set at maximum resistance, with the other leg of VR connected to Ground. Reduce
Resistance to increase voltage. Alternatively, pencil the resistor in the green
box to increase voltage. Go down slowly, about 20 ohms at a time, to increase
voltage.

Finally we come to the CPU Core Voltage Mod. Those using extreme cooling may
want more vCore than the BIOS allows.

4 ASUS P5N32 SLI SE Deluxe Pencil Voltage Mods

To increase vCore, solder a 20K Ohms Variable Resistor to the point marked
above, set at maximum resistance, with the other leg of VR connected to Ground.
Reduce Resistance to increase voltage. You can monitor voltage in the BIOS hardware
health monitor.