I honestly don’t think investors can tell the difference between LLMs+SD and more useful neural networks like audio and video filtering tools. All the money is in LLMs, anyways, I don’t think anybody is buying $1B of datacenter CPUs for the more useful kinds of AI.
The latest AMD cpus do have transcoding, but Amd transcode isn’t very good and isn’t very compatible with Linux.
You can pick up an Intel A310 single slot GPU for $100 and it has AV1 encode, which is something that the igpu QSV doesn’t have. Works very well in my Epyc motherboard with 76 pcie lanes. I definitely recommend going with an ATX 1st gen Epyc cpu+motherboard if you want something that can do NVMe raid.