We take our noise level measurements with the decibel meter on the top and middle section of the case, overhanging the side panel (power supply side, not motherboard tray side) by exactly 1 inch to avoid any airflow pressure coming from the exhausting AIO cooler.
I measured the sound floor to be 34 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.
Noise levels were measured after 5 minutes under three scenarios: desktop idle, Deus Ex: Mankind Divided at 4K, and the Fire Strike Ultra stress test.
Unlike other aftermarket GTX 1070 Tis we have seen recently, this AMP Extreme does not feature a ‘zero RPM’ mode where the fans stop spinning with the card under low levels of load. This means it is a bit noisier than the competition at idle.
It is also a couple of decibels louder than the other GTX 1070 Tis while under load, too, so there is clearly some trade-off between noise and thermals with this card.