But consumer product does not support SDCI (only Epyc Turin supports it), so it does not benefit too much if an accelerator is involved.

It's also useful to point out that the use cases and workloads where SDCI are most beneficial are far, far beyond the scope of what anyone will have installed in a Zen rig. Dual 100G networking cards? The cost of both of those damn near buys all of a 9950X3D2 setup.