Raptor Computing Systems Hardware > Blackbird

Heatsink dual fan configuration

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MauryG5:
Sorry guys, taking up the second fan speech managed by the Blackbird, I didn't understand exactly how to regulate the speed. I have a fan installed in the case which acts as an extractor fan to blow out the hot air produced by the CPU and GPU. Except that the speed of both fans, that of the CPU and the external one connected to the FAN2 pin of the motherboard, are the same so that after loading the PetitBoot, these slow down to the minimum speed. I would like to set the second fan FAN2 at a higher speed so that it sucks all the heat produced inside better. Is there a way through BMC to adjust this speed? Thank you

MPC7500:
You have three fan connectors on your Blackbird.
Fan1: CPU
Fan2: Rear
Fan3: Front

In total, I have installed six fans in my case.
You can't adjust the fan speed by yourself.

MauryG5:
So you're telling me that it's not possible to independently adjust the fan speed. Does Fan 3 also have the same speed as Fan 1 and Fan 2? I need to have a faster fan for extracting hot air from the inside ...

MPC7500:
Why do you need a faster fan? My fans often spin at the same speed (100RPM). Sometimes one spins faster (200 or 300RPM).
The fan speed is self-regulating. It is a PWM signal.

The fan curve when and how fast the fans are rotating can be adjusted. But for that you have to adjust the curve and then recompile the firmware.

MauryG5:
I wanted it a little faster because after a few hours of use, especially when you make the system work more, it starts to warm up a little, it feels to the touch touching the case and therefore the low speed does not help to expel the whole well hot air. I therefore put a fan connected directly to the power supply and then at maximum speed and in doing so the air is expelled much better and the system remains fresh but it makes itself feel like a little noise. If I could adjust this fan I think it would have been better but since it cannot be done, I will try to find a quieter fan and always connect it directly without going through the motherboard, in this way I will always have a full expulsion of air.

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