In the checkout process, i was suggested (at the bottom) to buy a cooler fan which i refused, rock 5b is able to run without any heating issue with passive cooling, in normal usage and not inside a case.
Don’t know about the case, but Radxa should look for how to make a metal case like the one for R5S.
If there is a metal case that DOES the job of cooling the board is that one!! And with copper thin this would be even better.
And while creating the metal case, leave a thin gap (at the side) where the camera FPC can get through. So we could use the camera with the metal case like a snorkel.
Rock 5B can boot with SD card only, eMMC only, and possibly with nvme soon.