I"m looking for a way to quiet down my new system. I was thinking of just unplugging my case fans when I don't need all that cooling power, for example watching movies. If I unplug or plug back in the fans while the power is on will I fry something? Also, I would like to know where I could get a replacement, possibly quieter, fan for my grapics card. It's a Chaintech FX 5900XT. Thanks.