TDP is about as meaningful on CPUs now as nm is in fab tech.
In practice the 3950x pulled up to ~225w running maxxed out avx2 workloads, ~300w if you overclocked it. The 3900x pulls up to ~190 watts at stock boosts. Both are called "105w TDP" parts.
In practice the 3950x pulled up to ~225w running maxxed out avx2 workloads, ~300w if you overclocked it. The 3900x pulls up to ~190 watts at stock boosts. Both are called "105w TDP" parts.
You'll also go way beyond 300W with heavy overclocking.
The limit can be lifted in the BIOS (or e.g. Ryzen Master) but that would no longer be stock operation. And there was a defect in the initial BIOS of ASRock X570 and maybe other motherboards, which broke PPT but that was running the CPU out of spec, not stock operation.
Here's the critique you should use! https://www.gamersnexus.net/guides/3525-amd-ryzen-tdp-explai...
Nevertheless, for a given manufacturer, TDP is useful as a coarse grouping of power consumption.
The definition AMD uses is absolute nonsense, given how much the θca values differ from model to model. If they fudged any harder the higher end CPUs would start having "TDP" lower than the weak CPUs.