~snip~
I set up my Apollo on Turbo getting about 3 TH, using 200W with the fan running at 2600 RPM.
It's still really quiet.
Maybe the newer batch got a better fan?
~snip~
The definition of quiet or silent is very dependent on the environment and the person listening to it.
Personally I refer to quiet as being basically inaudible while standing about 1 or 2 meters from it.
At 2600 RPM the stock fan is definitely audible, but for some people that can still be quiet. It can definitely get way louder at 300W+