Very quiet on normal level (about as loud as a pc fan), which sometimes peaks at 1.1TH/s

Though, I have mine set to high power mode (peaking at ~1.8TH/s), but with fan setting to auto adjust. So fan is noticeable, but quieter than the standard high power mode, as the auto fan sits ~65% fan speed vs the standard high power fan speed set at 75% and temp remains pretty stable at 60C

And tbh I don't mind the white noise of the fan... kinda calming while I work haha