Well all this stuff goes over my head and can't grab what you mean. I have seen videos of resoldering the gpu and there people use some stuffs but I have never learned what stuff it is. I found one pc store that is kept by an old man. He showed me that they have this gpu reballing machine in their cellar. I have thought that I would like to try to swap a gpu from N9 to N900. Or ia it gpu? I know as much of the parts of computer as I know of my motorcycle engine: zero understanding. I mean the square shaped piece on in the motherboard,. cpu/gpu. Names have never ment anything for me, not with theologians or philosophers, not with pc parts or engines. Only thing that matters is "Does it work?".