Question Do “better” CPUs run much hotter than less powerful ones?

[sloan1209]

I currently have an i5 6600k cpu with a Cooler master hyper 212 evo heat sink. I am considering upgrading to an i7 9700k cpu. I get that when over clocking a lot I would want to consider something better probably, but by default, will it be much hotter than the previous one?

 

[popatim]

Both have 91w TDP but can push that much closer to 150w when overclocked significantly.
The i7 might get there quicker with Hyperthreading enabled but IIRC the 150w was pretty much the limit on both.

 

[Ketchup79]

The 9700k runs 8 cores at 4.9 GHz. The 6600 only runs 4 cores at 3.3 Ghz. Even with the more modern process of the 4.9 and the equal "numbers", the 9700k will most definitely run hotter under load.

 

[Karadjgne]

The 6600k uses @ 75w at stock. The 9700k uses @ 200w at stock.

Guaranteed the 9700k runs hotter.

The CM hyper212 evo is a 140w cooler. So it'll not handle anything more complicated than websurfing or that 9700k will thermal choke and end up shutting down. You should be looking at 250w+ range coolers such as most 240mm aios or larger, or the big air coolers such as NH-D15/S, beQuiet Dark Rock Pro 4, Cryorig R1 etc if you want to keep gaming temps under 70°C