The average noise is high, which is expected given the unit’s high capacity and compact dimensions. You can call it super-noisy, though.
Fan Noise & Speed Maps @ 28-32 °C
The semi-passive operation lasts up to 540W, with a minimal load on the minor rails, and with a mid load at 5V and 3.3V, it can go up to 700W, which is 100W higher than the 1000W model. With 780W or higher loads, noise exceeds 30 dBA; with more than 1000W, noise exceeds 40 dBA. Two small regions at high loads have noise output within 45-50 dBA.