BIOS CPU temperature warning/shutdown?

[John Doe]

My new mainboard BIOS has some nice features, including the ability
to set the maximum fan speed to match the maximum desired CPU
temperature.

It also has a minimum CPU fan speed warning indicator. It's set at
the lowest possible, 800 rpm. Any higher and the alarm goes off when
the system is started.

That is odd IMO.

Instead, why don't they include a maximum CPU temperature warning
and system shutdown? Anybody's BIOS do that?

And as I understand it, there might be an automatic shutdown but
that is at a very high CPU temperature.

Thanks.

 

[Garrot]

Instead, why don't they include a maximum CPU temperature warning
and system shutdown? Anybody's BIOS do that?

I've had one mb that has that option but can't remember which it was. Asus
maybe.

As for your fan RPM issue. That is odd because the alarm should go off if
it is too low and not high.

 

[John Doe]

As for your fan RPM issue. That is odd because the alarm should go
off if it is too low and not high.

Yeah, it seemed odd, but it's checking for a minimum fan speed. The
fan starts out slowly, under that minimum speed.

 

[JAD]

My new mainboard BIOS has some nice features, including the ability
to set the maximum fan speed to match the maximum desired CPU
temperature.

It also has a minimum CPU fan speed warning indicator. It's set at
the lowest possible, 800 rpm. Any higher and the alarm goes off when
the system is started.

That is odd IMO.

LMAO does a fan rotate 'faster' when it breaks down?

 

[John Doe]

LMAO

Med time JAD.

Or maybe it's time to start using your imaginary kill-file friend.

does a fan rotate 'faster' when it breaks down?

No, but it does rotate slowly on system startup. Then it speeds up.
And if it breaks, then it slows way down again. The CPU temperature
doesn't cycle like that, and that's one reason it makes a better
failure indicator.

I don't care whether the fan breaks down, I care whether the CPU
overheats. And if it's all the same to the mainboard/BIOS maker, I
would prefer going by CPU temperature since that's what matters. The
CPU temperature is a better indicator of whether the CPU is too hot.
Fan speed is a sloppy indicator of whether the CPU is too hot.

I hope that's spoonfed well enough for JAD.

 

[Mike T.]

That is odd IMO.

Instead, why don't they include a maximum CPU temperature warning
and system shutdown? Anybody's BIOS do that?

Yes, just about everybody's except yours, apparently. In the last couple of
years at least, I haven't seen any mainboard that didn't have both a CPU
(high) temp. warning and the option for an automatic system shutdown at a
certain (too high) CPU temp. The boards I support are mainly Asus (gag me),
DFI and Intel. The systems I build are Epox, Abit, AOpen, DFI and Biostar
mainly, with a few other odd makes thrown in here and there. (But I do NOT
build with Asus, and wouldn't if you held a gun to my head!!!) All of these
brands include CPU temp. warnings and shutdowns. If any was missing that
option, I would have noticed, and been quite alarmed that the option was
missing.

 

[John Doe]

Yes, just about everybody's except yours, apparently. In the last
couple of years at least, I haven't seen any mainboard that didn't
have both a CPU (high) temp. warning and the option for an
automatic system shutdown at a certain (too high) CPU temp. The
boards I support are mainly Asus (gag me), DFI and Intel. The
systems I build are Epox, Abit, AOpen, DFI and Biostar mainly,
with a few other odd makes thrown in here and there. (But I do
NOT build with Asus, and wouldn't if you held a gun to my head!!!)
All of these brands include CPU temp. warnings and shutdowns. If
any was missing that option, I would have noticed, and been quite
alarmed that the option was missing.

Mainboard manuals are available online.

Please point to a mainboard manual that includes user setible CPU
temperature shutdown.

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From: "Mike T." <noway nohow.not>
Newsgroups: alt.comp.hardware.pc-homebuilt
References: <Xns98609C2D2BD00123456789 207.115.17.102>
Subject: Re: BIOS CPU temperature warning/shutdown?
Date: Thu, 19 Oct 2006 08:42:46 -0400
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[Mike T.]

Mainboard manuals are available online.

Please point to a mainboard manual that includes user setible CPU
temperature shutdown.

That's tough to do, as most printed manuals don't cover all BIOS settings.
But the first one I looked at had it. -Dave

ftp://ftp.biostar-usa.com/manuals/N4SIE-A7/N4SIEA7bios.pdf

 

[John Doe]

That's tough to do, as most printed manuals don't cover all BIOS
settings.

That's just not true.

My Microstar International (MSI) and my current ASUS mainboard
manuals have covered all of the BIOS settings. They don't cover them
in detail, but they are all listed with a short explanation.

Would be difficult for them to do otherwise especially when they
include screen captures.

settings But the first one I looked at had it. -Dave

ftp://ftp.biostar-usa.com/manuals/N4SIE-A7/N4SIEA7bios.pdf

Thanks. Maybe that is for Intel mainboards only. I haven't seen it
on my mainboards, Microstar International (MSI), my current ASUS
mainboard, or any of my other mainboards for AMD processors.

 

[Blinky the Shark]

That's just not true.

My Microstar International (MSI) and my current ASUS mainboard manuals
have covered all of the BIOS settings. They don't cover them in
detail, but they are all listed with a short explanation.

Would be difficult for them to do otherwise especially when they
include screen captures.


Thanks. Maybe that is for Intel mainboards only. I haven't seen it on
my mainboards, Microstar International (MSI), my current ASUS
mainboard, or any of my other mainboards for AMD processors.

I've had it (going back three or four years) with an Epox and my current
Shuttle motherboard -- both being AMD Socket A mobos. I have a Soyo
Dragon2 (also AMD Socket A) on the shelf that I've not yet installed
that has it -- Soyo manual calls it ABR (Advanced Burn Regulator) and
describe it thus: "Set the CPU temperature for the system to shut down."
It defaults to 85C.

 

[Blinky the Shark]

I've had it (going back three or four years) with an Epox and my current
Shuttle motherboard -- both being AMD Socket A mobos. I have a Soyo
Dragon2 (also AMD Socket A) on the shelf that I've not yet installed
that has it -- Soyo manual calls it ABR (Advanced Burn Regulator) and
describe it thus: "Set the CPU temperature for the system to shut down."
It defaults to 85C.

Add:

The Shuttle manual: "Shutdown Temerature. Select the combination of
lower and upper limits for the system shutdown temperature, if your
computer contains an envirionmental monitoring system. If the
temperature extends beyond either limit, the system shuts down." This
setting is on the "Health Status" page of BIOS settings. Phoenix BIOS.
(The Soyo board has American Megatrends BIOS.)

 

[sdlomi2]

My new mainboard BIOS has some nice features, including the ability
to set the maximum fan speed to match the maximum desired CPU
temperature.

It also has a minimum CPU fan speed warning indicator. It's set at
the lowest possible, 800 rpm. Any higher and the alarm goes off when
the system is started.

That is odd IMO.

Instead, why don't they include a maximum CPU temperature warning
and system shutdown? Anybody's BIOS do that?

And as I understand it, there might be an automatic shutdown but
that is at a very high CPU temperature.

Thanks.

Just a guess, as I've never heard of this setting. If it is designed to
control fan speed as a function of system demand AND wishes to minimize
noise, it must have the capability to slow down the fan speed. Maybe if the
initial fan speed is set too high, then its controller would not be able to
adjust the speed to its lowest rpm as designed. Maybe?? s

 

[John Doe]

John Doe wrote:

I've had it (going back three or four years) with an Epox and my
current Shuttle motherboard -- both being AMD Socket A mobos. I
have a Soyo Dragon2 (also AMD Socket A) on the shelf that I've not
yet installed that has it -- Soyo manual calls it ABR (Advanced
Burn Regulator) and describe it thus: "Set the CPU temperature for
the system to shut down." It defaults to 85C.

Makes sense. Apparently I've just missed it in the mainboard
brands/purchases I've made.

Thanks.

 

[sbb78247]

That's just not true.

My Microstar International (MSI) and my current ASUS mainboard
manuals have covered all of the BIOS settings. They don't cover them
in detail, but they are all listed with a short explanation.

Would be difficult for them to do otherwise especially when they
include screen captures.


Thanks. Maybe that is for Intel mainboards only. I haven't seen it
on my mainboards, Microstar International (MSI), my current ASUS
mainboard, or any of my other mainboards for AMD processors.

look at the q-fan setting and determine which ratio it is running. that
will give your bios false warnings on start up. no joke.

now **** off john