If you e.g. Works on the PC,
will the same computer get hotter with a weak i3 or the variant with a strong i7 CPU?
Theoretically, yes, but in practice, the laptop with the i7 has better cooling. However, a modern i7 has as much (if not less) heat development as an i3 or pentium
The more powerful the CPU is, the more waste heat i.d.R. Produced. That's why you can also i.d.R. For a laptop, do not replace a CPU, because then you.a. Even the cooling concept no longer fits.
Exactly you can read this at the TDP value (Thermal Design Power) of a CPU - the higher this value, the more must be cooled.
Generally, of course, the CPU gets hotter, which gets more power to deliver more power accordingly, so the i7. It also depends on the cooler. If the i3 has a bad cooler, it may be just as hot as the i7 (with a good cooler) …
