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.
Likewise, the Vanguard SOC is incredibly quiet. When using the Silent BIOS, the fans spun at just 31%/1040rpm, proving to be effectively inaudible in my testing. The Gaming BIOS was barely any louder, running at 35%/1130rpm, and that only registered at 33dBa on my sound meter. Safe to say, you won't be hearing this card over any case fans.