Yo,
after grabbing one Titan, wanted to check this small IC; cause many posted it was the hardest mod.
So, after some tries I think I figured out that the pin should be the trace marked on the above photo.
PS.
Haven't tested yet so it isnt 100% sure that it will work
Also for those who want to disable Boost technology cause in a test card runs @1180mhz and on an other 1190mhz place bat file into inspector's folder and run it.
It will change your clocks as well so after running it please set again the clocks you want. Keep in mind that bat file should be on the same dericetory as nvidiaInspector.exe is
An other PS. I chose to .zip it cause could not upload bat files.
Enjoy, hope it helps