My B3 came and works fine so far

It is as loud as an S9 or D3 despite using lesser electricity. It has 6 boards with 2 chips on each board and it is auto-tune. U cant lower fans, so make sure u set up a place that can take some noise. This isnt gpu quiet despite using low electricity. I am not sure wat speed the fans spin at because sit just shows zero.
Maybe you can buy and install Enermax D.F. Storm fans to provide enough cooling (3500rpm, 155CFM), but with a low noise level.