4 ms·

I would be surprised that a PID controller can't adjust the control signal of the fan on the order of milliseconds/hundreds of microseconds. The mass of the fan

by duped 3y ago

I would be surprised that a PID controller can't adjust the control signal of the fan on the order of milliseconds/hundreds of microseconds. The mass of the fan would be the bigger issue. Something that would help is multiple fans being adjusted by the same PID controller. It's not a problem if they're spinning too fast, but if you need more cooling the controller needs to increase air flow at the fastest rate which means turning up multiple fans.

lostlogin 3y ago
Fans are annoying enough when at a steady speed, but a fan that is continually changing speed sounds extra irritating if it’s in the same room. Some sort of smoothing plus a conservative base rate might be more tolerable.
- guappa 3y ago
  > a conservative base rate Do you use windows? I find that with windows the fan is always spinning, even if at low speed. While with linux most of the times it is not spinning at all.
  - lostlogin 3y ago
    I’m on a Mac - and for the first time a computer I can’t hear (it’s a model with a fan).
    - guappa 3y ago
      Mac tend to run hot to be more silent. I had to throttle my CPU in my macbook or it would shutdown for overheating while compiling. I don't consider that a feature.
      - jamespo 3y ago
        sounds like an intel mac
  - whywhywhywhy 3y ago
    In windows my CPU fan is always spinning although silently in my experience but my case fans spin down. ASUS motherboard Noctua fans if that makes a difference.
  - fennecbutt 3y ago
    >Do you use windows In a desktop the motherboard controls the fans unless you have an alternative like fan control installed, so not windows. In a laptop it's either still the motherboard, or a specific chip used to manage the fans and other peripherals (ie for Dell/XPS it's locked out of bios control and you need to use Dell's special software to adjust it; Fuck You, Dell!), so still not Windows.
    - guappa 3y ago
      Well a basic windows install will keep the CPU more occupied than a basic linux install, when both are idle. This reflects in the CPU being hotter, which reflects in the fan spinning more.
crote 3y ago
The problem is that you really don't want the fans to react that quickly. Fans make noise, and a changing noise is far more irritating than a constant buzz in the background. You quickly stop hearing a fan constantly running at 50%, but a fan randomly switching between 10% and 100% gets on your nerves extremely quickly.

by duped 3y ago

lostlogin 3y ago

Fans are annoying enough when at a steady speed, but a fan that is continually changing speed sounds extra irritating if it’s in the same room. Some sort of smoothing plus a conservative base rate might be more tolerable.

guappa 3y ago
> a conservative base rate Do you use windows? I find that with windows the fan is always spinning, even if at low speed. While with linux most of the times it is not spinning at all.
- lostlogin 3y ago
  I’m on a Mac - and for the first time a computer I can’t hear (it’s a model with a fan).
  - guappa 3y ago
    Mac tend to run hot to be more silent. I had to throttle my CPU in my macbook or it would shutdown for overheating while compiling. I don't consider that a feature.
    - jamespo 3y ago
      sounds like an intel mac
- whywhywhywhy 3y ago
  In windows my CPU fan is always spinning although silently in my experience but my case fans spin down. ASUS motherboard Noctua fans if that makes a difference.
- fennecbutt 3y ago
  >Do you use windows In a desktop the motherboard controls the fans unless you have an alternative like fan control installed, so not windows. In a laptop it's either still the motherboard, or a specific chip used to manage the fans and other peripherals (ie for Dell/XPS it's locked out of bios control and you need to use Dell's special software to adjust it; Fuck You, Dell!), so still not Windows.
  - guappa 3y ago
    Well a basic windows install will keep the CPU more occupied than a basic linux install, when both are idle. This reflects in the CPU being hotter, which reflects in the fan spinning more.

crote 3y ago

The problem is that you really don't want the fans to react that quickly. Fans make noise, and a changing noise is far more irritating than a constant buzz in the background. You quickly stop hearing a fan constantly running at 50%, but a fan randomly switching between 10% and 100% gets on your nerves extremely quickly.