You might want to increase the airflow in and out of your case, in hopes the card won't get to 70C
i have the side of my case open, i have some dust off that i use frequently so dust isnt really a problem
matto17secs: There is nothing wrong with your card or temperatures if you are gaming at 70c with the fan on Auto. The card is running exactly as it was intended. If you start messing with the fan profile, you will only add to the noise level.
really? i heard that over 65C isn't good for cards. as long as it wont degrade the lifespan of the card noticeably then i'll keep the fans at 100% while gaming, cus i don't mind the noise levels