The cooler is well-made and does its job properly. It reaches around 30 degrees at idle, 40-50 degrees with light usage (browsing and multiple programs running simultaneously without heavy load), and 65-75 degrees during casual gaming (LoL, GTA V).

BUT:

This specific cooler is intended for very small computer cases, resulting in it not being powerful enough for heavier processes. For example, when using a program for photo rendering (KeyShot 9), I had to limit the CPU usage to 10% to prevent temperatures from reaching up to 100(!) degrees. Currently, I'm fine for general usage, but I'm unsure if it will be sufficient during summer (or with heavier games/programs).

Don't make the same mistake as me, who, out of ignorance, didn't get a more powerful one despite having a normal (large) case.