Renoir can be configured the way manufacturer wants. There are 3 power levels that depend on how long is the load, which can also change depending on active profile. For Swift 3- there is a very short 30W boost, after which it goes into longer, 25W boost (can be several minutes), which settles at 18W of sustained power.
For example Lenovo Ideapad 5 has 12.5W, 15W and 25W profiles, and they all also boost much higher than that for short tasks. This is standard for U-series notebooks, and it seems Intel is even bringing it to desktops with their latest power hungry CPUs.
As for the other question- reviewers have noticed some throttling, but only in select applications- with the majority running at full 18W indefinitely without throttling. One Chinese reviewer fixed this by adding a thermal pad inside the laptop, to connect the heatpipe with the aluminium back, which improved the performance a bit, and stopped occasional throttling in CB.
Quote from: DavidC1 on June 08, 2020, 23:09:12
Then we cannot say 4700U is at 15W when running games. It seems its closer to 30W.
And does the system throttle on battery or not?