The test was running Furmark which is a power virus that does not behave like any game. It will easily push the fans to 100% even on a test bench. That's not why I posted the video, it was for the noise of the card. Putting it on a test bench will obviously make it noisier than in a case which will dampen the sound. The card is not that loud running full bore on an open testbench. It is going to be even quieter in a case while gaming.
The video gives no useful information on the real sound level, you can hear the change in volume as the fan ramps up but without a known baseline or actual DB figure we don’t know the actual volume. Even with a DB reading we would need to know the distance between the meter and the noise source to be able to compare. For example moving the microphone in the video 0.5, 1.0, 1.5m from the gpu would give different perception of the noise level.
As I said earlier the amount of heat from the gpu dumped in the case will have an impact on the temperature in the case and this in turn can cause other fans to respond. It’s the overall noise from the system I’m hearing and not just the gpu.