I've built passively cooled systems based on Ryzen 5 2400G in Streacom FC8 Alpha Chassis. They run a little hotter than I normally like, but they are rock solid.
That's marketing speech. In real life, the binary ordering will be like this:
0000
0001
0011
0010
0110
0111
0101
0100
1100
1101
1111
1110
1010
1011
1001
1000
The point is to only change one bit between neighboring analog levels.