I recently added a thermaltake 80mm fan to the back of my case and the little fan on my motherboard (A8N-SLI) thats right under my video card is being very loud now. When i look inside my case the fan is running slower than usual, but when i play a game for about 30 minutes the sound goes away and the fan runs at normal speed. I tryed using speedfan but apparently my motherboard wont let speedfan change the speed. Any help is appreciated.