Intel has been making CPUs with integrated GPUs for ages, i7-6700K with UHD630 graphics for example, the thing is they contain a very small number of shaders, etc, because there is only so much real-estate on a single die and these weren’t really intended for gaming, just providing enough GPU for a basic display, watch videos, etc.
Can have a shared power envelope and naturally shares heat dissipation - which can both be limiters to simultaneously making full use of integrated graphics & CPU as well, even if the integrated graphics were powerful enough for gaming.
Intel has been making CPUs with integrated GPUs for ages, i7-6700K with UHD630 graphics for example, the thing is they contain a very small number of shaders, etc, because there is only so much real-estate on a single die and these weren’t really intended for gaming, just providing enough GPU for a basic display, watch videos, etc.
Can have a shared power envelope and naturally shares heat dissipation - which can both be limiters to simultaneously making full use of integrated graphics & CPU as well, even if the integrated graphics were powerful enough for gaming.