Akktually, according to the second law of thermodynamics you cannot get hotter with lower consumption of energy (with equivalent heatsinking, in terms of thermal resistance, measured in K per Watt) , at idle, as idle is a state of thermal equilibrium (and at rather low sustained power of 3-5w, well within ability of heatsink to dissipate), where none of your reasons are applicable.
> according to the second law of thermodynamics you cannot get hotter with lower consumption of energy (with equivalent heatsinking, in terms of thermal resistance, measured in K per Watt
cpus are not an ideal thermal system and do have their own internal thermal resistance. a 7800X3D runs hotter than a 7700X at equivalent (limited) PPT, which runs hotter than a 13900K at the equivalent (limited) PPT, because the thermal resistance is higher. these are objectively measurable things!
Also, generally, surface area is a component of thermal intensity as well and if you take the same flux and spread it out over more surface area you will get a lower temperature too. A threadripper putting out 250W does so with less thermal intensity than a 7800X3D putting out 250W and will run at a lower temperature too.
like yes, you are correctly describing the measurements in which these cpus are not the same thing, but then making the incorrect leap that "because in a spherical-cow world they would be equal" that these cpus are equivalent in these metrics in real life, which they are not. different cpus have different thermal resistances, and AMD's is generally higher right now because of the decision to go with a thicker IHS (to maintain cooler compatibility) and the move towards stacking (more silicon in the way = more thermal resistance).
and again, don't pretend this is some absurd or unknown concept, we literally spent years and years with amd fans making memes about "intel toothpaste"... thermals and wattage dissipated are not the same thing. you can have a great, efficient product with terrible thermal resistance, there have been a number of them!
it's just that AMD isn't on the top this time, so everyone pretends not to get it... or volunteers a bunch of theoretical reasons it doesn't matter... or ...
just like "thermal watts aren't the same thing as electrical watts!" etc
