If you imagine a properly, holistically-designed product, which wasn't full of chips from different warring companies, the high power GPU could be used to augme

If you imagine a properly, holistically-designed product, which wasn't full of chips from different warring companies, the high power GPU could be used to augment the power of the on-die GPU, instead of having to turn it off and deal with a whole bunch of mad signal-switching issues. AMD products can do this to an extent with crossfire, but generally, this is a world that we don't live in.