I bought a Rock Pi 4 and the whole kit-n-kaboodle. Just finished doing some benchmarking and it has pretty impressive performance, but it definitely needs assistance staying cool. The case I have is aluminum with the bottom of the case being a whole-board heatsink, and I still had to set it on top of ice packs with a fan blowing to keep it from throttling under heavy benchmarking load.

I think one thing people don't think about with SBCs is that we are making pretty significant thermal performance trade-offs. I wish somebody made a case with a clean flow through and at least 1 120mm fan in it.