Full Voltage Mod Guide on the ATI HD 4870 GPU is underway
i have the mods done and pictures up, will have soldering guide up soon
you will need the following:
Wire
Soldering Iron
Solder
2 10K OHM Trimmers
1 100 OHM Trimmer
1 ATI HD 4870 GPU
Some free time
Full article and images linked here to my website