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.
Unfortunately, the Orc is a loud graphics card. I saw the fans hit upwards of 2300RPM during a 30-minute stress test, and that resulted in a noise reading of 46dBa – it is noticeably louder than the A750 Limited Edition and will be clearly audible over your case fans. I didn't notice any coil whine, but the fan noise alone is fairly unpleasant.