How would DLSS, which runs on GPU hardware — and specifically, as I understand it, GPU hardware that accelerates AI inference — eliminate the GPU?

And if a system is intended to be modular and upgradable, what would combining the GPU and CPU into a single module contribute to this goal?

Now an architecture that separates the memory controller from the CPU and gives pluggable CPUs and GPUs (and storage and network controllers, for that matter) equal access to a single pool of RAM in a secure and high-performance way, that would certainly be interesting, and not only or even primarily for gaming.