The 7950X3D is in a different league to 5800X3D. It’s massively faster and that’s why it’s been released. I’m not sure how people are confusing the the hardware of the 7950X3D and the 5800X3D.
In tasks where we are gpu bound the cpu makes sone difference but as it’s not the bottleneck the effect is low. Let’s say it’s between 5-10 fps at most.