There's a rudimentary version of these on laptops: the integrated graphics and discrete graphics are co-opted to make a hybrid GPU, but it has a lot of gotchas

There's a rudimentary version of these on laptops: the integrated graphics and discrete graphics are co-opted to make a hybrid GPU, but it has a lot of gotchas (especially when it's not AMD-AMD (which is super rare and will still be if their new laptop designs still flopped the market)). I think that it will matter in the future for two reasons: 1) Intel being competent in graphics and 2) East Asian and European power consumption regulations (which is sometimes commented as draconian, and the reason that Intel even bothered making ATX12VO).