Wow, Alright, Tell us the brand, No, Better yet, Link us a Newegg.ca page of your video card.
1.You need good airflow
2.You NEED good airflow
3.Do you have good airflow?
4.I have NINE fans just to cool my 7950 so that at 1100core, 1.131mv, It runs at 76% fan speed, And 77°c
5.Got Dust?
6.(i dont mine LTC, So i dont know if this affects your speed) Drop your memory clock to about 600, This will save you about 10°c
Never run the fans at 100% for longer than an hour.
Never run the card at 100°c for prolonged periods of time, You'll turn your 10yr card into a 1.5yr card (lifespan)
GET SOME AIRFLOW