Hi,i have a core i7-7700k with a be quiet pure rock slim as a cpu cooler and a tacens imperator w case,and my cpu temps are all over the place reaching temps of 90-100C(while gaming),i had to undeclock the cpu to 1.110V,but me PC crashes every now and then,so im looking for a new cpu cooler and i dont know which one to buy (im not going to overclock),which one should i buy??