We take our noise measurements with the sound meter positioned 1 foot from the graphics card. I measured the noise floor to be 32 dBA, thus anything above this level can be attributed to the graphics cards. The power supply is passive for the entire power output range we tested all graphics cards in, while all CPU and system fans were disabled. A reading under load comes from running Cyberpunk 2077 for 30 minutes for 30 minutes.
The Aero OC also impresses in terms of its noise levels. Of course, the Silent BIOS is the quietest mode, where the fans spin at just 1170rpm, producing 33dBa of noise. The OC BIOS sees fan speed increase to 1485rpm, but even that is still very easy on the ears, with noise levels hitting just 35dBa.