December 29, 201312 yr Nvidia 8800 GTX/Ultra reference PCB G80 Pics of the card: vMods: For the 8800GTX the voltage for the G80 GPU and GDDR3 memory can be read out at the following places: Just like we showed on previous page you might want to solder a couple of wires to those readout spots so that voltage reading is easier once your card is being installed in your housing. The default voltage for the GPU is 1,3V; the default memory voltage is around 1,95V. GPU Voltage Modding You need a soldering mod for this one, therefore one must connect a 500 Ohm variable resistor between the marked spot and any ground. To increase voltage you must lower the VR's resistance, so always make sure that your VR is set to highest value before you turn on your pc. MEM Voltage Modding For the MEM voltage mod we must search for the small AT PWM IC. The marked resistor is the one you need to shade with your B2 pencil. Strike it a few times and measure how the resistance changed. You can also try the soldering mod, therefore one must connect a 20 kOhm variable resistor between the marked spot and any ground. And again you must lower the VR's resistance to increase voltage, so always make sure that your VR is set to highest value before you turn on your pc. Edited December 29, 201312 yr by der8auer
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