Yes, in the most energy efficient mode, it shows 8 THs/500 W now. 900W/11TH - in maximum mode. Modes depend on external conditions (temperature), Hotmine CM-1 himself adapts to them

Smart guy...)
40 db - it is veryquiet noise, like noise from a laptop at low revs. It seems that there is a movement inside, and a sensitive sound meter can hear this noise.
Yes, it is psu, but without fans, passively cooled.