I just installed an AMD stock heatsink on a pny gf4 Ti4200. I'm going to be using the 60x10mm fan as well, but at 5v to eliminate noise. Anyway, I know video fans run at 5v and I am wondering if using the fan header on the video card is a viable option. I have no idea what kind of current the stock fan draws or what the fan header is capable of delivering. Of course it is just a 4200, I could always give it a try and replace it if something blows...