fan shroud

[heimdali]

I just made an excotic fan shround and wanna show it off

 

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +33.0°C  (high = +85.0°C, crit = +105.0°C)
Core 0:         +31.0°C  (high = +85.0°C, crit = +105.0°C)
Core 1:         +32.0°C  (high = +85.0°C, crit = +105.0°C)
Core 2:         +31.0°C  (high = +85.0°C, crit = +105.0°C)
Core 3:         +31.0°C  (high = +85.0°C, crit = +105.0°C)

 

 

Edited October 21, 2017 by heimdali
temperatures

[Ordinarily_Greater]

wow that is one fan shroud

[heimdali]

Just now, Ordinarily_Greater said:

wow that is one fan shroud

LOL, indeed

 

These fans are connected to the BMC, and I´m trying to use ipmitool to set thresholds such that at least the CPU fan (the middle one) doesn´t need unnecessarily fast.  I got the thresholds for the fan down, but the fan still runs at 9k RPM.  What might I be doing wrong?  Maybe I need not set the fan thresholds but some temperature thresholds?

 

 

ipmitool sensor
CPU0_TEMP        | 24.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 83.000    | 90.000    | 100.000   
VCORE_CPU0       | 0.952      | Volts      | ok    | 0.744     | 0.768     | 0.792     | 1.528     | 1.544     | 1.560     
+1.5V_DDR3       | 1.524      | Volts      | ok    | 1.364     | 1.396     | 1.428     | 1.588     | 1.620     | 1.652     
PCH              | 1.044      | Volts      | ok    | 0.948     | 0.980     | 1.012     | 1.124     | 1.156     | 1.188     
+3.3V            | 3.360      | Volts      | ok    | 2.960     | 3.024     | 3.056     | 3.456     | 3.520     | 3.632     
+5V              | 5.188      | Volts      | nc    | 4.444     | 4.588     | 4.708     | 5.188     | 5.308     | 5.452     
+5VSB            | 4.948      | Volts      | ok    | 4.444     | 4.588     | 4.708     | 5.188     | 5.308     | 5.452     
VBAT             | 3.344      | Volts      | ok    | 2.992     | 3.024     | 3.056     | 3.504     | 3.536     | 3.568     
+12V_MONITOR     | 12.349     | Volts      | ok    | 10.547    | 10.865    | 11.183    | 12.614    | 12.879    | 13.197    
THERMAL01        | 26.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 75.000    | 85.000    | 100.000   
THERMAL02        | 26.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 75.000    | 85.000    | 100.000   
CPU_FAN1         | 9000.000   | RPM        | ok    | 1000.000  | 3000.000  | 5000.000  | 6000.000  | 8500.000  | 16000.000
SYS_FAN1         | 5700.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
SYS_FAN2         | 5700.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
SYS_FAN3         | 5800.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
Watchdog         | na         | discrete   | na    | na        | na        | na        | na        | na        | na        

 

(I disabled the watchdog.)

 

[Ordinarily_Greater]

@heimdali maybe it is about cranking the settings down

[heimdali]

Which ones?

 

I lowered the thresholds for CPU_FAN1.  But if that is a sensor, it might mean something about the fan being ok when running within thresholds and not ok when not.  That would have nothing to do with how fast the BMC thinks it should run.

 

These settings survive a reboot.  Perhaps I need to crank the thermal thresholds up?

 

[Ordinarily_Greater]

1 minute ago, heimdali said:

Which ones?

 

I lowered the thresholds for CPU_FAN1.  But if that is a sensor, it might mean something about the fan being ok when running within thresholds and not ok when not.  That would have nothing to do with how fast the BMC thinks it should run.

 

These settings survive a reboot.  Perhaps I need to crank the thermal thresholds up?

 

yeah but will cranking up the therma threshold also crank the Fan RPM up as the thermal goes up?

[heimdali]

My ears hurt

 

Only some of the setting survive turning it off and back on.  I need to put a different fan on it to be able to work on it, this is too loud ...

 

There goes my excotic fan shroud.

 

The measured temperatures don´t really change.  Setting the thermals higher didn´t change anything.  One could think the fan is out of control, but it is not because it runs faster for a few seconds when switching the thing on.

 

[heimdali]

Ok, I took the shroud off and put a fan from an AMD boxed cooler for a Phenom on it so I can work on this.  Wow is that quiet!

 

Physical id 0:  +33.0°C  (high = +85.0°C, crit = +105.0°C)
Core 0:         +29.0°C  (high = +85.0°C, crit = +105.0°C)
Core 1:         +33.0°C  (high = +85.0°C, crit = +105.0°C)
Core 2:         +28.0°C  (high = +85.0°C, crit = +105.0°C)
Core 3:         +33.0°C  (high = +85.0°C, crit = +105.0°C)

 

CPU0_TEMP        | 23.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 83.000    | 90.000    | 100.000   
VCORE_CPU0       | 0.952      | Volts      | ok    | 0.744     | 0.768     | 0.792     | 1.528     | 1.544     | 1.560     
+1.5V_DDR3       | 1.524      | Volts      | ok    | 1.364     | 1.396     | 1.428     | 1.588     | 1.620     | 1.652     
PCH              | 1.044      | Volts      | ok    | 0.948     | 0.980     | 1.012     | 1.124     | 1.156     | 1.188     
+3.3V            | 3.360      | Volts      | ok    | 2.960     | 3.024     | 3.056     | 3.456     | 3.520     | 3.632     
+5V              | 5.188      | Volts      | nc    | 4.444     | 4.588     | 4.708     | 5.188     | 5.308     | 5.452     
+5VSB            | 4.924      | Volts      | ok    | 4.444     | 4.588     | 4.708     | 5.188     | 5.308     | 5.452     
VBAT             | 3.344      | Volts      | ok    | 2.992     | 3.024     | 3.056     | 3.504     | 3.536     | 3.568     
+12V_MONITOR     | 12.296     | Volts      | ok    | 10.547    | 10.865    | 11.183    | 12.614    | 12.879    | 13.197    
THERMAL01        | 27.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 75.000    | 85.000    | 100.000   
THERMAL02        | 27.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 75.000    | 85.000    | 100.000   
CPU_FAN1         | 2600.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
SYS_FAN1         | 5700.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
SYS_FAN2         | 5700.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
SYS_FAN3         | 5700.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000
Watchdog         | na         | discrete   | na    | na        | na        | na        | na        | na        | na        

 

 

The CPU0_TEMP and THERMAL0* thresholds and the three rightmost thresholds for all the fans are being reset when switching it off and back on.  Now I wonder if the cpu fan will go faster when I increase the temperatures.

 

 

Physical id 0:  +55.0°C  (high = +85.0°C, crit = +105.0°C)
Core 0:         +50.0°C  (high = +85.0°C, crit = +105.0°C)
Core 1:         +55.0°C  (high = +85.0°C, crit = +105.0°C)
Core 2:         +50.0°C  (high = +85.0°C, crit = +105.0°C)
Core 3:         +55.0°C  (high = +85.0°C, crit = +105.0°C)

 

CPU0_TEMP        | 45.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 83.000    | 90.000    | 100.000   
THERMAL01        | 29.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 75.000    | 85.000    | 100.000   
THERMAL02        | 37.000     | degrees C  | ok    | 5.000     | 12.000    | 16.000    | 75.000    | 85.000    | 100.000   
CPU_FAN1         | 2600.000   | RPM        | ok    | 1300.000  | 1400.000  | 1500.000  | 16000.000 | 17000.000 | 18000.000

 

I start to wonder if the BMC actually does control the fans or only tells you if something is critical or not ...

 

The AMD fan did run faster for a few seconds when I switched it on, so I know it´s not at full speed just like the louder one before.

 

Do I need higher temperatures to see a change?  Intel says 61.8 is the temperature limit for this CPU.