doktor83, can you tell me how to find the voltage offset equivalent portion in your tool so set a negative value?  In windows I can use watttool and set my card at -18 and shave 40 watts off.  I have come across a few threads talking about I2C but I dont fully understand how to find that specific value even after using atombiosreader to find voltageobjectinfo and then searching in hex workshop.  Following a few other threads from a google search I see you have helped others with it.  Is it possible to get some explanation on what I need to do?