After some gaming, I realized the cpu fan is way too crap for my cpu, cuz everytime I play games, the cpu goes to 81c. Any recommandations on a better cpu fan?
Depends on the cpu. 81°C on an i9 9900k is normal, even with decent cooling, 81°C on an i3 is quite high, and if it's an accuratish measurement, 81°C on a FX 8 series means it needs serious help.
So;
what cpu: gotta know how much heat the new cooler has to deal with. OC?
what cooler: is it or isn't it sufficient.
what case: they come in different sizes and some coolers won't fit.
what case fans and where are they: lack of decent airflow will cause high temps.
what gpu: the other possible contributer to high case temps.