Quote Originally Posted by fornowagain
Send it back if you can.

http://www.silentpcreview.com/forums...ic.php?t=16658

Could be lots of things, VRM's, a poorly assembled choke coil can vibrate, or even a capacitor can squeal with frequency change. Sometimes if you can find it, potting with hotglue can help. Pretty much though, it won't go away.
Trying to find out if this is a general problem with the 8800 GTX card. If not its going back. Hassle .......