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).
The Windforce cooler is one of the noisier coolers when it gets under load. Fortunately it's very quiet when idle. At least it's only noisy when you throw some headphones on or pump up the sound for your game, which will ultimately help drown out that fan noise.