According to what I read in this thread
https://linustechtips.com/main/topic/435570-do-amd-products-run-hotter-than-intel/AMD processors tend to run hotter but Intel processors have higher peak temperatures.
To get an idea of sizes, there's an article showing AMD coolers here
https://www.anandtech.com/Show/Index/105...-amd-vs-evo-212and here for AMD Phenom
http://www.silentpcreview.com/amd-phenom-coolersand here for AMD Ryzen
http://www.relaxedtech.com/reviews/amd/wraith-max-and-wraith-spire-cooler/1If your computer has temperature sensors for the CPU, you can get an idea of whether your processor is being cooled adequately. If you're running processor-intensive games or other processor-intensive applications, you may want to replace the stock cooler with one that has greater cooling power.
The cooling power of the computer case can also affect how well the CPU cooler can cool. If your computer case tends to get hot inside, the CPU cooler has to have more cooling power.