Sonata II - CPU Fan Speed very high and noisy


D

dreherthomi

I have bought a custom built pc with this components:
case - sonata II 450W PSU
mobo - Asus m2n32-sli
cpu - AMD athlon 4200 dual core
I do not overclock.

There is one case fan on the rear 120mm, with a switch with 3 speed
settings.
The Asus supplied monitoring software (Probe II) shows:
Case open: MB 45 deg celcius, cpu 44 deg celsius, cpu fan speed 2670
rpm. chassis fan: no reading.

Like this, the noise level is bearable, and how I thought "Sonata"
with all that praise of low volume would behave.

When I close the case, the cpu fan speed goes to 5400rpm, and then the
machine sounds like a learjet.

Has somebody made similar experiences with this case and what did you
do? Just leave the case open?

Thanks for your ideas, opinions, etc,
 
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F

FKS

dreherthomi said:
I have bought a custom built pc with this components:
case - sonata II 450W PSU
mobo - Asus m2n32-sli
cpu - AMD athlon 4200 dual core
I do not overclock.

There is one case fan on the rear 120mm, with a switch with 3 speed
settings.
The Asus supplied monitoring software (Probe II) shows:
Case open: MB 45 deg celcius, cpu 44 deg celsius, cpu fan speed 2670
rpm. chassis fan: no reading.

Like this, the noise level is bearable, and how I thought "Sonata"
with all that praise of low volume would behave.

When I close the case, the cpu fan speed goes to 5400rpm, and then the
machine sounds like a learjet.
Make sure the case panel doesn't touch anything when closed.
 
C

Clint

The case doesn't control the CPU fan; that's the job of the motherboard and
other drivers/software. So I'd start by looking at options there. I think
AMD has some "Cool and Quiet" or something like that to handle the increase
of the CPU fan speed in relation to the CPU temp, but I'm not an AMD user.
When you monitor the CPU fan speed, what does the temp go up to? Also, have
you tried other monitoring software?

FWIW, I've got a E6300 processor on an Asus P5W DH motherboard in a Sonata
II case, with a Scythe Ninja cooler. I've got the Scythe fan blowing
through the cooler, which happens to be pointed directly at the case fan on
the back, which is blowing out. With this setup, I can set the case fan to
the lowest speed, and the CPU fan at it's lowest. The temps stay nice and
cool, and the setup is as quiet as any I've ever had, which is very much
appreciated. I also had to replace the fan on my video card to keep the
noise level down, as it had a tendancy to wind up loudly when playing games.

Clint
 
S

SteveH

dreherthomi said:
I have bought a custom built pc with this components:
case - sonata II 450W PSU
mobo - Asus m2n32-sli
cpu - AMD athlon 4200 dual core
I do not overclock.

There is one case fan on the rear 120mm, with a switch with 3 speed
settings.
The Asus supplied monitoring software (Probe II) shows:
Case open: MB 45 deg celcius, cpu 44 deg celsius, cpu fan speed 2670
rpm. chassis fan: no reading.

Like this, the noise level is bearable, and how I thought "Sonata"
with all that praise of low volume would behave.

When I close the case, the cpu fan speed goes to 5400rpm, and then the
machine sounds like a learjet.

Has somebody made similar experiences with this case and what did you
do? Just leave the case open?

Thanks for your ideas, opinions, etc,

I've built several PC's into Sonata's (not sonata 2's) using AMD and Intel
CPU's and I've never had a noise issue.
I can't imagine the noise issue you have is to do with the case.
Is the CPU fan the AMD one supplied with the CPU? While not the best of
coolers, they are OK and usually none too noisy. You could try one of these:
http://www.arctic-cooling.com/cpu2.php?idx=80&disc=
I've got this on a X2/4600, it never gets above 45c under full load and you
would be hard pushed to hear the cooler at all.
You could also try putting a front fan in the case to see if that helps or
even take it back to where you got it and get them to make sure the cooler
is fitted properly.

HTH
SteveH
 
D

dreherthomi

I've built several PC's into Sonata's (not sonata 2's) using AMD and Intel
CPU's and I've never had a noise issue.
I can't imagine the noise issue you have is to do with the case.
Is the CPU fan the AMD one supplied with the CPU? While not the best of
coolers, they are OK and usually none too noisy. You could try one of these:http://www.arctic-cooling.com/cpu2.php?idx=80&disc=
I've got this on a X2/4600, it never gets above 45c under full load and you
would be hard pushed to hear the cooler at all.
You could also try putting a front fan in the case to see if that helps or
even take it back to where you got it and get them to make sure the cooler
is fitted properly.

HTH
SteveH- Hide quoted text -

- Show quoted text -

Thank you all for replying,

Yes, the CPU Fan is an AMD supplied Fan, I made 2 pictures and put it
on my website http://www.ecoonomweb.com/amdcooler1.jpg and http://
www.ecoonomweb.com/amdcooler2.jpg.
The airway is free towards the rear of the case, I rechecked the
temperature again when the case is closed, it is then 55 deg and the
mobo temp is 49 deg, the cpu fan is then rotating with 5400rpm.
This drops to 2700 rpm when the case is open. The graphics card
geforce 7600GT does not seem to have a cooler fan, just metal radiator
elements. Those radiator elements are just next to the cpu.
The case has a duct which connects the power supply to the rear of the
case, that should minimize temperature as well,

My conclusion sofar is that either the cpu fan is not powerful enough
or that maybe the thermal connection between the cooler and the cpu
is not good,

This PC is the replacement of a 10year old pentium III 450 mhz which
was somewhat noisy, and I was looking forward to having a powerful,
new and quiet system...
Thanks again for taking the time to answer me.
 
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D

dreherthomi

Thank you all for replying,

Yes, the CPU Fan is an AMD supplied Fan, I made 2 pictures and put it
on my websitehttp://www.ecoonomweb.com/amdcooler1.jpg and http://www.ecoonomweb.com/amdcooler2.jpg.
The airway is free towards the rear of the case, I rechecked the
temperature again when the case is closed, it is then 55 deg and the
mobo temp is 49 deg, the cpu fan is then rotating with 5400rpm.
This drops to 2700 rpm when the case is open. The graphics card
geforce 7600GT does not seem to have a cooler fan, just metal radiator
elements. Those radiator elements are just next to the cpu.
The case has a duct which connects the power supply to the rear of the
case, that should minimize temperature as well,

My conclusion sofar is that either the cpu fan is not powerful enough
or that maybe the thermal connection between the cooler and the cpu
is not good,

This PC is the replacement of a 10year old pentium III 450 mhz which
was somewhat noisy, and I was looking forward to having a powerful,
new and quiet system...
Thanks again for taking the time to answer me.- Hide quoted text -

- Show quoted text -

sorry, these are the correct urls:
http://www.economweb.com/amdcooler1.jpg
http://www.economweb.com/amdcooler2.jpg
 
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