CPU Fan screaming

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Hi,

I have a Gigabyte GA-8KNXP (Rev 2.0) with an Intel P4 3E ('Prescott'/90nm)
CPU. The thermal spec, according to Intel documentation, for this chip is
69.1 Celcius. At power-up the CPU temperature (measured using the EasyTune
utility) is about 56/57 degrees, rising to 65/66 degress under a heavy-load.
The problem is that, in the latter scenario, the fan (standard Intel
heatsink/fan combo) gets revved up to 5000+ RPM which is *extremely loud*.
Even, as I write this, the temperature is measured at 58 degress and the fan
is rotating at 4200RPM (when I switched it on this morning it was reading
the same temperature but the fan was only spinning at 2600RPM) - still loud
enough to be annoying. Nothing in the machine is overclocked, by the way.

Oddly, I put the system together about a month ago and this has only begun
happening in the last week or so! I emailed Gigabyte product support and
they replied:

"HI This is a strange one!,No definate answers for you im afraid. It"s one
of those cases that would need to be physically checked. Please return to
your dealer for 2nd opinion or RMA"

Fair enough but a little terse - I wondered if anyone had any opinions as to
what could be causing this situation and how to remedy it *before* I strip
down the machine again and send off for a replacement motherboard. Is it
definitely the motherboard that is the problem even?

As an aside, why can't I adjust the CPU Fan Setting on the Smart-Fan tab of
the EasyTune utility? This section, to the left of that for the "N/B Chipset
Fan Controller", is disabled.

Thanks.

-dan

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Uninstall EZ Tune and see what happens. It has caused a variety of weird
problems on many machines. Also try disabling the "smart fan" option in the
BIOS.

"Dan Brill" <news@mangoed.com> wrote in message
news:RyLqc.15689429$Id.2600773@news.easynews.com...
> Hi,
>
> I have a Gigabyte GA-8KNXP (Rev 2.0) with an Intel P4 3E ('Prescott'/90nm)
> CPU. The thermal spec, according to Intel documentation, for this chip is
> 69.1 Celcius. At power-up the CPU temperature (measured using the EasyTune
> utility) is about 56/57 degrees, rising to 65/66 degress under a
heavy-load.
> The problem is that, in the latter scenario, the fan (standard Intel
> heatsink/fan combo) gets revved up to 5000+ RPM which is *extremely loud*.
> Even, as I write this, the temperature is measured at 58 degress and the
fan
> is rotating at 4200RPM (when I switched it on this morning it was reading
> the same temperature but the fan was only spinning at 2600RPM) - still
loud
> enough to be annoying. Nothing in the machine is overclocked, by the way.
>
> Oddly, I put the system together about a month ago and this has only begun
> happening in the last week or so! I emailed Gigabyte product support and
> they replied:
>
> "HI This is a strange one!,No definate answers for you im afraid. It"s one
> of those cases that would need to be physically checked. Please return to
> your dealer for 2nd opinion or RMA"
>
> Fair enough but a little terse - I wondered if anyone had any opinions as
to
> what could be causing this situation and how to remedy it *before* I strip
> down the machine again and send off for a replacement motherboard. Is it
> definitely the motherboard that is the problem even?
>
> As an aside, why can't I adjust the CPU Fan Setting on the Smart-Fan tab
of
> the EasyTune utility? This section, to the left of that for the "N/B
Chipset
> Fan Controller", is disabled.
>
> Thanks.
>
> -dan
>
>

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Remove the fan, replace it with a passive cooler or a Northpole.

www.sidewindercomputers.com


"Dan Brill" <news@mangoed.com> wrote in message
news:RyLqc.15689429$Id.2600773@news.easynews.com...
> Hi,
>
> I have a Gigabyte GA-8KNXP (Rev 2.0) with an Intel P4 3E ('Prescott'/90nm)
> CPU. The thermal spec, according to Intel documentation, for this chip is
> 69.1 Celcius. At power-up the CPU temperature (measured using the EasyTune
> utility) is about 56/57 degrees, rising to 65/66 degress under a
heavy-load.
> The problem is that, in the latter scenario, the fan (standard Intel
> heatsink/fan combo) gets revved up to 5000+ RPM which is *extremely loud*.
> Even, as I write this, the temperature is measured at 58 degress and the
fan
> is rotating at 4200RPM (when I switched it on this morning it was reading
> the same temperature but the fan was only spinning at 2600RPM) - still
loud
> enough to be annoying. Nothing in the machine is overclocked, by the way.
>
> Oddly, I put the system together about a month ago and this has only begun
> happening in the last week or so! I emailed Gigabyte product support and
> they replied:
>
> "HI This is a strange one!,No definate answers for you im afraid. It"s one
> of those cases that would need to be physically checked. Please return to
> your dealer for 2nd opinion or RMA"
>
> Fair enough but a little terse - I wondered if anyone had any opinions as
to
> what could be causing this situation and how to remedy it *before* I strip
> down the machine again and send off for a replacement motherboard. Is it
> definitely the motherboard that is the problem even?
>
> As an aside, why can't I adjust the CPU Fan Setting on the Smart-Fan tab
of
> the EasyTune utility? This section, to the left of that for the "N/B
Chipset
> Fan Controller", is disabled.
>
> Thanks.
>
> -dan
>
>

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Hi,

Certainly (ultimately) this would be a possibility but I'm presuming that if
Intel are supplying the heatsink/fan combo then, at least in their opinion,
under normal circumstances it is sufficient. Anyway, I don't really know the
root cause of the problem (Gigabyte product support weren't entirely
helpful). If I buy another fan then the issue turns out to be with the
motherboard then I really would be throwing good money after bad, no?

-dan

"Richard Dower" <richarddower@hotmail.com> wrote in message
news:c8grc5$ncu$1@kermit.esat.net...
> Remove the fan, replace it with a passive cooler or a Northpole.
>
> www.sidewindercomputers.com

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)

Thanks for the suggestion - I tried it but to no avail.

Ultimately, after further investigation, I believe that this problem is more
simple than expected. Unfortunately, this is to diagnose but not to solve.

As I write this, the CPU temperature is about 65/66 Celcius. The temperature
at the hub of the CPU fan is 45 degrees, and that of the air about an inch
away from the hub is 41 degrees (generally about 3 or 4 degrees less). If I
remove the side panel, the air temperature inside the case immediately (in
less than five seconds) drops by at least 10 degrees (and the fan - the
original apparent problem - slows down).

It seems to me that there is just too great a build up of hot air in this
area of the chassis and that it can't be exhausted quickly enough to
maintain a reasonable internal temperature. Intel states that systems should
be integrated in such a way as to maintain a temperature of 38 Celsius or
lower. However, there must come a point where this is impossible due to the
extremes of heat emitted by the processor.

Ultimately, I wonder what steps I can take to combat the situation. I could
replace the Intel supplied heatsink/fan combo (probably voiding my warranty)
but I'd rather not do this since the one they supply should, at least, be
'fit for the purpose'. The case is a high-quality Antec aluminium chassis
with two 120mm fans (an intake and an exhaust located close to the CPU). The
power supply is an Antec TruePower 430W which has two 80mm exhaust fans. The
graphics card (ATI Radeon 9800 Pro) has its own fan, as does the North
Bridge, and the DSP2 riser card which comes with the motherboard (GA-8KNXP
Rev 2.0).

The case is fairly clear and unobstructed. My only reservation is that the
intake fan is blowing the heat from the 10,000RPM SATA hard drive RAID array
into the case rather than exhausting it - this is because of the 'standard'
setup of a lower-front intake and a upper-rear exhaust.

I really don't know what else I can do. My wife's computer is identical
(apart from having two 7200RPM IDE hard drives forming its RAID array) but
with an AMD Athlon XP 2800+ instead of the P4 3E and runs a full ten degrees
(or more) cooler! Same case, same fans, same pretty much everything - the
'smart' fans in this chassis don't even need to spin much of the time in
order to maintain the temperature (it really is whisper quiet).

Any additional ideas or suggestions?

Cheers.

-dan

"Kilgore Trout Jr" <someguy@earthlink.net> wrote in message
news:%jSqc.1869$Tn6.581@newsread1.news.pas.earthlink.net...
> Uninstall EZ Tune and see what happens. It has caused a variety of weird
> problems on many machines. Also try disabling the "smart fan" option in
the
> BIOS.