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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 the 3DMark Time Spy stress test for 30 minutes.
The benefit to the Silent BIOS is immediately noticeable, with peak noise readings below 37dB. This is about 5dB less than the card using the OC BIOS, and while that is certainly not loud for a graphics card, you can hear the fans spinning so the Silent BIOS does make a difference. To put it into context, the Silent BIOS saw the fans spin at just 28%, or 1200rpm, while the OC BIOS ran the fans at 42%, or about 1800rpm.
As for the Gaming OC, it's a little quieter than the Aorus using the OC profile, but not by much, with its three fans spinning at 41% under load, or around 1740rpm. Again, it's a good result but there are quieter cards out there.
