Sustained workload temperatures for the 5600G and 5700G would be appreciated, as well as a more real world benchmark. But if it's really useful in practice without thermal issues, then awesome!
The only reason I don't throw up a bunch of stuff like cinebench, prime95, etc. is the net is chock-a-block with reviews including that data. And my sample size of one, only reflects where my APU falls in the silicon lottery at best. I used the 3dMark run because it provides the specs, making it easy to share that info.
I have been using it since the OP, and not a stability issue yet for anything I do. Highest reported voltage in HWinfo is 1.444v so far. It set its max frequency limit to 4.655GHz. I don't see temperatures over 70c for anything I do, the most stressful being gaming, using a Noctua u12s Redux. It is currently in a Phantek full tower with excellent air flow in a 74f/23c room as well. How it does in the Deskmini I intend to put it in, remains to be seen.
But yeah, for what I do, it is definitely 100 percent stable with good temps. All I do with this system, is some dvdshrink, makeMKV, handbrake, that kind of stuff, but mostly gaming, including emulators.