They said they route vram/rams though the io die in the gamer nexus's video. Wondering if that means GPU will also have direct access to ram. So it will not act

They said they route vram/rams though the io die in the gamer nexus's video. Wondering if that means GPU will also have direct access to ram. So it will not actually be a very big problem? Probably slower, but not terribly swapping like those 8gb gpu.