Voltage mods for Vdimm, Vcore, VAGP, VLDT and VDD.







Here are the full voltage mods on the Asus SK8N. The regulator chips are located as shown.


General Overview of the VMod Regions on the ASUS SK8N Motherboard

The Vdimm measurement point can be taken from the mosfet leg
as shown in the below picture. The regulator chip is also shown in the picture,
RT9202, and to mod the voltage, you can connect a 10K variable resistor to pin
6 and to ground. Set at maximum resistance first and tune down resistance slowly
to get increase in voltage.

The Vcore regulator is the ADP3166 chip as shown


VR to SMD Cap(Click to Enlarge)

Connect a 20K VR to the SMD cap shown and to ground.
Set at
maximum resistance first and tune down resistance slowly to get increase in
voltage.

And here is the LM324 chip regulating the AGP, LDT and chipset/VDD
voltages.


VDD, VAGP and VLDT (Click to Enlarge)

For AGP voltage, connect a 100K VR to pin 2 to ground. Set at
maximum resistance first and tune down resistance slowly to get increase in
voltage.

For LDT voltage, connect a 20K VR to pin 9 to ground. Set at
maximum resistance first and tune down resistance slowly to get increase in
voltage. Default is around 1.2v, try not to go above 1.5v as it may be dangerous
for the CPU.

For Chipset/ VDD voltage, connect a 20K VR to pin 13 to ground.
Set at maximum resistance first and tune down resistance slowly to get increase
in voltage. Default is around 1.6v, going higher will make the NForce3 chipset
hotter so make sure it is cooled properly.

And of course the spots to measure the above voltages. AGP voltage
is measured at mosfet leg shown here, right below the AGP slot.


VAGP Closeup (Click to Enlarge)

You can solder on a wire to the leg so that you can check with
your AGP card in.

The LDT and chipset voltages are measure at the mosfet legs
shown here.


VDD and VLDT Closeup (Click to Enlarge)

And there you have all the voltages at your disposal. Have fun!

 


 

Leave a comment