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).
I actually expected the EVGA GTX TITAN to run louder than it does - surpassingly considering the amount of performance the card offers, it's fairly quiet. The card could probably run a little louder if they wanted to which would help bring the temperature down.
With that said 81c isn't an issue and most would probably prefer the lower noise levels - NVIDIA and EVGA have done a pretty good job here with the fan profile.