He's changing the resistors such that the bits which specify the identity of the board to the system now identify as something else? So if in fact there was som

He's changing the resistors such that the bits which specify the identity of the board to the system now identify as something else? So if in fact there was some difference in the board design or chip design, then it could cause problems where unexpected faults occur. It's like saying you are capable of doing X, Y, Z, but really you can only handle X and Y situations. When someone asks you to do Z, you're screwed. But I don't know enough about Nvidia GPU hardware design, and I'm sure he wouldn't be publishing this hack if it didn't work well.