Nvidia 8800GTS Vmods

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any one done the Vgpu mod shown here? It is quite a bit different from the other one shown. Looks a bit easier maybe for someone with poor soldering skills like me.

Im in the same boat. I'm ready to do the mod but only have 1kohm vr. they used 10k vr for the mem and 1kohm for the gpu. Anyone want to walk me through this?

1st thing should I measure the stock vgpu?
then I'm suppose to measure the resistance of the pink and red points with the card unplugged.

Then not enough resistance so start soldering?

I'm nervous. :\

how do you guys stick the vr to the corner of the pcb so neatly? Is that a glue gun? Any good place to order extra vr's online if you live in US? Thanks

For the GPU core voltage mod we must search for the Primarion PX3540 PWM IC. The resistor marked in blue is the one you need to shade with your B2 pencil. Strike it a few times and measure how the resistance changed, you can check resistance by holding the red wire of your multimeter to the red point and the black wire of your multimeter to the pink point.

The stock resistance measures around 35 Ohm, this is very low and this will make it very hard to pencil mod the GPU core voltage, we recommend doing the soldered modification. For the solder mod we used a 1kOhm adjustable resistor (often called VR) and soldered it between the red and pink point. This changed our stock voltage from 1.3V to 1.33V. To further increase voltage we must lower the resistance of the variable resistor, before you power on your system always make sure that your VR is set to highest value. For 1,4V we adjusted the stock resistance of 35 Ohm to 29 Ohm.