Nvidia, GPU and PhysX games

As Nvidia has dropped support for PhysX in legacy games on its RTX 50 GPUs, a Redditor has bought a separate RTX 3050 as a ...
Both CPUs and GPUs are processors, and sometimes you only need a CPU. So, what's the difference between these two?
That's what we saw over and over again this morning when trying to buy Nvidia's RTX 5070 Ti. Unfortunately, the GPU experienced the same launch-day troubles as the RTX 5090 and 5080: Low supplies and ...