I'm using an XFX 8400 GS video card and the fan on it is the loudest part of my system. It's not loud, but makes the most noise. Prior I had a Radeon 9000 AGP that just had a heat sink on it and loved how quiet the whole system was. Realizing that the 8400 GS is a crap video card, I bought an 8800 GT (still shipping from Dell). I'm expecting the 8800 GT to have a louder fan just because it's a better card.
