Hey all. Im trying to get a quiet system. It's going well. I used to have my 6800gt agp RPM slider set at full when i first got it and when i wasn't into getting a quiet system. However, when I put the fan RPM slider to the lowest setting a buzzing noise appears which annoys me, it ruins the quietness i have at the moment. The buzz noise goes away only when the RPM slider is at the upper end, but then the fan is just too noisy in general. Does anyone know what might be causing this buzz when the RPM slider is set to low. Thank You.