Hi again,
As @devman noted the fan for the Style A is noisy, and knowing that I cannot expect too much for the price, at least in my case the quality is very very poor, I'm waiting for Friendlyarm to make available a metal case for NEO3, and will order a NEO3 with metal case an the Style B metal case for the RS2.
The fan is noisy but helps (attached logs), testing with "stress -c 4" the temperature rises gradually and does not exceed 82C, maintaining the maximum speed at all times, it drops immediately when there is no load.
Without fan the temperature immediately rises to 83C-85 C and the cpu suffers to maintain the maximum clock speed, although it is not really remarkable, without load it takes a long time to return to normal values and it costs a lot to drop from 50C.
In brief, this option is completely silent and works fine if you made a big square hole on top of the yellow case, but after less than 4 months the fan started to fail and the noise is simply insupportable:
This one also works fine, obviously better with the fan connected, but the quality is poor (for example screws are not long enough to maintain the fan flat) and the fan is noisy, who knows how many time will be working fine the fan:
Yep, at the end I will spent more in cases and fans that in the SBC
BR.
style_A_without_fan.txt
style_A_with_fan.txt