Pulling out the TES 1350A Sound Level Meter we find ourselves quickly yelling into the top of it to see how loud we can be.
After five minutes of that we get a bit more serious and place the device two CM away from the fan on the card to find the maximum noise level of the card when idle (2D mode) and in load (3D mode).
Overall noise levels don't change much at all. If a slightly more aggressive profile was selected, you could probably drop the temperature a bit at the cost of more noise.
As always, though, if you're overclocking, setting manual fan speeds is a fairly easy process, if you don't want to drop the temperature.