Isn't this well within spec though? These SoCs and memory chips can tolerate much higher than that, so what am I missing? Because it looks like Sony saved a few bucks and thermal operations are still darn good.
Every Integrated Circuit can tolerate higher thermals than that, but long term reliability is proportional to operating at higher temperatures over long periods of time.
The 11.07°C drop is a giant improvement for the SoC, that's great and all; but the RAM going up by 7.32°C & VRM going up by 1.35°C isn't good for long term longevity IMO .
It'll be fine in the short term, the here and now; but I'm thinking long term, many years down the line.
Constantly operating at higher temperatures doesn't do any favors for the RAM or VRM portions.
If you want longer term reliability, you want everything to operate at the coolest possible temperatures that are practical.
But I'm sure somebody is already working on another hardware revision.
Maybe one where there is no Thermal Regressions and only improvements.