This is just beautiful:
This is possible using the 3M Novec 7000, a non-conductive liquid with a boiling point of 34C.
The above example uses absolutely no fans, so the only sound would probably come from the slight bubbling/boiling. Steampunk PC is here!
An engineer combined the liquid solution seen above with a radiator (no pump), allowing for high overclocks:
here's the guy's website: