I blew out my case and cleaned everything thoroughly. My temps are well within the acceptable range when bit mining now. I plan on trying to snag a fan for the side of my case, which should help even more as it would blow air right between my cards.
also upgrade case you front and rear fans to something [way]more powerful. stock ones was silent enough, but not so mighty and usually have sleeve bearing[silent, but low-resource type]. something branded Noctua, Noise Killer, Cooler Master, Zalman and etc.