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.

no, dual 100Gb are not that expensive any more, eg https://www.scan.co.uk/products/2-port-intel-e810-cqda2blk-d... UK retail for gbp349.