PSU Fan Speed Too Low?


J

Jackpine

My system includes an Enermax Liberty 500W psu and an Asus P5LD
Deluxe motherboard. I have installed the Asus Probe utility fo
displaying temperatures and fan speeds

When I check, all temps and rpms are green, i.e., normal, except fo
the psu fan. It reads typically about 920 rpm. Asus Probe show
this as red, and gives me a warning about the psu fan rpm

The psu manual indicates that normal psu fan speed is in the range 80
to 2000 rpm

Does the fact that I get usually around 920 rpm mean that there may b
a problem with psu cooling? Should it be higher? Is there anythin
that I need to adjust
 
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M

Mike T.

Jackpine said:
My system includes an Enermax Liberty 500W psu and an Asus P5LD2
Deluxe motherboard. I have installed the Asus Probe utility for
displaying temperatures and fan speeds.

When I check, all temps and rpms are green, i.e., normal, except for
the psu fan. It reads typically about 920 rpm. Asus Probe shows
this as red, and gives me a warning about the psu fan rpm.

The psu manual indicates that normal psu fan speed is in the range 800
to 2000 rpm.

Does the fact that I get usually around 920 rpm mean that there may be
a problem with psu cooling? Should it be higher? Is there anything
that I need to adjust?

The liberty is made to run quiet. One of the ways it keeps itself quiet is
to slow down the fan when the power supply is relatively cool. 920RPM is
really slow, which is why the asus mainboard thinks that there is something
wrong with the power supply. But, it is all operating as it was designed
to. If there is an option, turn off the fan speed warning for the
SU. -Dave
 
C

Chris Hill

My system includes an Enermax Liberty 500W psu and an Asus P5LD2
Deluxe motherboard. I have installed the Asus Probe utility for
displaying temperatures and fan speeds.

When I check, all temps and rpms are green, i.e., normal, except for
the psu fan. It reads typically about 920 rpm. Asus Probe shows
this as red, and gives me a warning about the psu fan rpm.

The psu manual indicates that normal psu fan speed is in the range 800
to 2000 rpm.

Does the fact that I get usually around 920 rpm mean that there may be
a problem with psu cooling? Should it be higher? Is there anything

Nothing to worry about; the asus utility is just expecting a speed
faster than your psu requires. As long as your case is staying fairly
cool, forget about it and enjoy the peace and quiet.
 
C

Conor

Jackpine said:
My system includes an Enermax Liberty 500W psu and an Asus P5LD2
Deluxe motherboard. I have installed the Asus Probe utility for
displaying temperatures and fan speeds.

When I check, all temps and rpms are green, i.e., normal, except for
the psu fan. It reads typically about 920 rpm. Asus Probe shows
this as red, and gives me a warning about the psu fan rpm.

The psu manual indicates that normal psu fan speed is in the range 800
to 2000 rpm.

Does the fact that I get usually around 920 rpm mean that there may be
a problem with psu cooling? Should it be higher? Is there anything
that I need to adjust?
Yes. Your brain. Why would Asus Probe have a clue what speed is normal
for a specific PSU fan? It doesn't. It merely works on a reference
which is frequently wrong.
 
C

Clint

You can also set the threshold speed that triggers the alarm in the
AsusProbe application. I set mine down to 600rpm, so it will warn me if the
fan is turned off, but it won't set it off if the PSU fan is doing what it's
supposed to be doing; running as quietly as it can.

Clint
 
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J

Jackpine

I asked
Does the fact that I get usually around 920 rpm mean that there ma
be a problem with psu cooling? Should it be higher? Is there anythin
that I need to adjust

To which Conor responded
Yes. Your brain. Why would Asus Probe have a clue what speed i
normal for a specific PSU fan? It doesn't. It merely works on
reference
which is frequently wrong

Thanks for nothing. I didn't ask why Asus Probe knows what speed i
normal for a specific psu fan, nor did I assume that it did. Sinc
Asus Probe gave me a warning message specifically about the psu fa
speed, the normal reaction is to question the speed of the fan, an
ask if there is something wrong

Thanks to the rest of you who responded with something meaningful an
useful
 
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