A7N8X-E deluxe resets at 166MHz FSB

[Ellerich]

Hi, I´ve a A7N8X-E deluxe MB, 2x 512 MB Infineon 400MHz DDR RAM and an
Athlon 2800+ that is cooled by an Artic Copper Silent 2. Systems runs
stbale at 100, 133 but not at 166MHz external CPU speed. I´ve changed the
RAM with that from my office-PC but the problme is the same. Let me mention
the additional problem: direct after switching the PC on a, I hear the
accustical warning "CPU FAN FAILED", but I´ve conncetd to the right positon
(CPU FAN 1 on the Mainboard. The temperature in the BIOS displays a
temperature of 60°C at 166 MHz and 56°C at 133 MHz external CPU speed. Is
this too hot for the CPU ?

Does anybody have simliar problems ? Is this a problem of the MB or the CPU
or the CPU FAN ???

Thanks for your help,

Ellerich.

 

[Nero]

You running that ram in sync and not out of sync with the cpu?
The XP2800 runs at 333MHz(166x2)
Ram should be at 166 as well.
The cpu fsb jumper should be set to fsb400/333/266 setting and not fsb200.

 

[John Crawford]

Hi, I´ve a A7N8X-E deluxe MB, 2x 512 MB Infineon 400MHz DDR RAM and an
Athlon 2800+ that is cooled by an Artic Copper Silent 2. Systems runs
stbale at 100, 133 but not at 166MHz external CPU speed. I´ve changed the
RAM with that from my office-PC but the problme is the same. Let me mention
the additional problem: direct after switching the PC on a, I hear the
accustical warning "CPU FAN FAILED", but I´ve conncetd to the right positon
(CPU FAN 1 on the Mainboard. The temperature in the BIOS displays a
temperature of 60°C at 166 MHz and 56°C at 133 MHz external CPU speed. Is
this too hot for the CPU ?

Does anybody have simliar problems ? Is this a problem of the MB or the CPU
or the CPU FAN ???

Thanks for your help,

Ellerich.

Check your CPU FSB jumper settings

 

[Ellerich]

CPU FSB jumperseetings are the default: FSB 400/333/266....

 

[Paul]

You running that ram in sync and not out of sync with the cpu?
The XP2800 runs at 333MHz(166x2)
Ram should be at 166 as well.
The cpu fsb jumper should be set to fsb400/333/266 setting and not fsb200.

If the BIOS memory frequency setting is "By SPD", the ram will run
at its rated speed. In this case, that is DDR400.

You want the memory to run at the same speed as the FSB of the processor.
A memory setting of "Sync" or "100%" means the FSB and memory run
at the same speed.

HTH,
Paul

 

[Ellerich]

CPU FSB jumperseetings are the default: FSB 400/333/266....

 

[Ellerich]

The frequency setting ist not " BY SPD"...........its "Auto"....., but I
think the main problem is the high CPU temperature of 60°C (and the CPU FAN
failure message) or don´t you think so ???

 

[Paul]

The frequency setting ist not " BY SPD"...........its "Auto"....., but I
think the main problem is the high CPU temperature of 60°C (and the CPU FAN
failure message) or don´t you think so ???

Well, 60C is warm, but it doesn't mean that it has to stop working
at that temperature. 65C is a reasonable limit.

Is this temperature measured while idle and sitting in Windows ?
Or is this temperature at 100% load ? If the CPU is 60C at idle,
it'll be a lot more under load.

Your HSF is here:
http://www.arctic-cooling.com/en/

Rated Fan Speed: 2200 RPM
Power Consumption: 12 V, 0.13 Amp.
Air Flow: 29 CFM
Weight: 395 g
Noise Level: 18 dB
Thermal Resistance:   0.30 °C / Watt
recommended CPUs: AMD Athlon XP up to 3200+

Make sure Qfan is disabled. You need the fan to spin at its top speed.
I would have thought the 2200 RPM is enough for the monitor to measure.
The AthlonXP 2800+ operates at 1.65V and draws 53.7watts. If the
room temperature is 25C and the case (motherboard) temp is 30C,
then the CPU will be 30C+(53.7W*0.30C/W)=46.1C at 100% load.

This means either you are measuring the die temperature, or
there is something wrong with the way the HSF is installed,
or Vcore has been set higher than 1.65V or you have
overclocked the processor some how. Check to see that the
BIOS detects the core clock as 2083MHz.

Have you cracked any slivers of silicon off the CPU die, while
installing the heatsink ? It could be that the CPU is
damaged or something. Have you ever run Prime95 torture
test, and is the processor stable with 100 and 133MHz clock
when running Prime95 ? (no roundoff errors.) Can you run
the CPU in another motherboard, to see if this is a motherboard
issue ?

HTH,
Paul

 

[markbl]

Well, 60C is warm, but it doesn't mean that it has to stop working
at that temperature. 65C is a reasonable limit.

Is this temperature measured while idle and sitting in Windows ?
Or is this temperature at 100% load ? If the CPU is 60C at idle,
it'll be a lot more under load.

Your HSF is here:
http://www.arctic-cooling.com/en/

Rated Fan Speed: 2200 RPM
Power Consumption: 12 V, 0.13 Amp.
Air Flow: 29 CFM
Weight: 395 g
Noise Level: 18 dB
Thermal Resistance:   0.30 °C / Watt
recommended CPUs: AMD Athlon XP up to 3200+

Make sure Qfan is disabled. You need the fan to spin at its top speed.
I would have thought the 2200 RPM is enough for the monitor to measure.
The AthlonXP 2800+ operates at 1.65V and draws 53.7watts. If the
room temperature is 25C and the case (motherboard) temp is 30C,
then the CPU will be 30C+(53.7W*0.30C/W)=46.1C at 100% load.

This means either you are measuring the die temperature, or
there is something wrong with the way the HSF is installed,
or Vcore has been set higher than 1.65V or you have
overclocked the processor some how. Check to see that the
BIOS detects the core clock as 2083MHz.

Have you cracked any slivers of silicon off the CPU die, while
installing the heatsink ? It could be that the CPU is
damaged or something. Have you ever run Prime95 torture
test, and is the processor stable with 100 and 133MHz clock
when running Prime95 ? (no roundoff errors.) Can you run
the CPU in another motherboard, to see if this is a motherboard
issue ?

HTH,
Paul

I had this combination. I would echo the advice to turn Q-Fan off as it doesn't seem to work.

You'll get CPU fan fail initially as the Arctic cooler being temperature controlled, runs too slowly for the BIOS to detect at startup.

I found that a XP 2500+ was the practical limit for this cooler. On a XP 2800+ the temperature would go over 60C and the system would shut down.

I replaced the cooler with a Thermaltake silent boost which runs the CPU at 48C.


--
Cheers,

Mark.

===============================================
"For every problem, there is one solution which is
simple, neat and wrong." -- H. L. Mencken
http://www.brainyquote.com/quotes/quotes/h/q109323.html

 

[Ellerich]

Thanks Paul, thanks Mark,

please let me mention first that my local dealer will change all the
components I´ve bought by him (in 2 days, because he is empty of the board).
He says that the failure message is due to temperature control of the fan.
You said this too, Mark....so it is ok for me. At the moment I´m running
the Prime95 torturetest at 166MHz...its now stable for 15 minutes and
temperature is CPU 64°C and MB 40°C.......I think its very warm in the
chassis ...
I´ve updated the BIOS today and hope that this will solve my problems.
However I think you´re right Mark. Its better to cool the system a little
bit more down with an efficent cooler.

One more question I´ve to you, Paul:
what the hell are Lucas-Lehmer iterations that were run in this torture test
??? I´ve never heard it before ? It sounds terrible, like the darkest depth
of physics

Ok, thanks for your help guys and if there is any more probleme I´ll be back
soon

Take care,

Sven.

P.S. Temperature is stable at 64°C ;-)



http://www.arctic-cooling.com/en/products/copper_silent2tc/

I had this combination. I would echo the advice to turn Q-Fan off as it doesn't seem to work.

You'll get CPU fan fail initially as the Arctic cooler being temperature

controlled, runs too slowly for the BIOS to detect at startup.

I found that a XP 2500+ was the practical limit for this cooler. On a XP

2800+ the temperature would go over 60C and the system would shut down.

 

[Ellerich]

....damn...same problem as before....
after 35 minutes of Prime 95 torture-test I stopped the test to ensure that
the FSB ist at 166Mhz....it was, but after restart I´ve had the same
problems again....

however

I think the problem is not due to the temperature because it increased up to
69°C/42°C (measured by ASUS PC Probe), the FAN runs at 3000rpm and system is
stable running without any errors (at the moment)

I think there is a hardware defect......what do you think ???

 

[Paul]

Thanks Paul, thanks Mark,

please let me mention first that my local dealer will change all the
components I´ve bought by him (in 2 days, because he is empty of the board).
He says that the failure message is due to temperature control of the fan.
You said this too, Mark....so it is ok for me. At the moment I´m running
the Prime95 torturetest at 166MHz...its now stable for 15 minutes and
temperature is CPU 64°C and MB 40°C.......I think its very warm in the
chassis ...
I´ve updated the BIOS today and hope that this will solve my problems.
However I think you´re right Mark. Its better to cool the system a little
bit more down with an efficent cooler.

One more question I´ve to you, Paul:
what the hell are Lucas-Lehmer iterations that were run in this torture test
??? I´ve never heard it before ? It sounds terrible, like the darkest depth
of physics

Ok, thanks for your help guys and if there is any more probleme I´ll be back
soon

Take care,

Sven.

P.S. Temperature is stable at 64°C ;-)

Here is a quick reference on Mersenne Primes.
http://www.utm.edu/research/primes/mersenne/index.html

You need more air movement through your computer case (40C is too
high). The fan in the PSU is not enough to cool a computer. The
PSU fan waits too long before speeding up. You need at least one
additional 80mm fan in the back of the computer. If the temperature
is still high, add a second fan to the front of the computer case.

It is possible your processor is bad. Maximum die temperature is
85C, and you need a way to measure that.

http://mbm.livewiredev.com/comp/asus.html
http://www.nforcershq.com/forum/viewtopic.php?t=16364

A graphing plugin for MBM is mentioned here:
http://www.livewiredev.com/bbs/showthread.php?s=&postid=18215

HTH,
Paul

http://www.arctic-cooling.com/en/products/copper_silent2tc/

 

[markbl]

Here is a quick reference on Mersenne Primes.
http://www.utm.edu/research/primes/mersenne/index.html

You need more air movement through your computer case (40C is too
high). The fan in the PSU is not enough to cool a computer. The
PSU fan waits too long before speeding up. You need at least one
additional 80mm fan in the back of the computer. If the temperature
is still high, add a second fan to the front of the computer case.

I would second that. I replaced one old case that was at 38C with a cheap Chenbro gaming bomb/spider as it could take a 120mm rear fan and front 92mm which will move far more air than a 80mm and more quietly. Quiet temp. controlled fans from www.quietpc.com give me a quiet case with case temps down to 30C. A more expensive option would be an Antec Sonata which also takes big fans but I've not tried one myself.

The Thermaltake cases with large numbers of fans (my V2000A has six) also provide good cooling at a reasonable volume and fan controller as standard, although their so-called screwless design is oversold and the original PCI card clips don't work.

If the arctic is at 3000 rpm it's running flat out, you need more cooling.

I'm using BIOS 1008 with Qfan disabled.

As I noted before, the CPU fan failed message on post is because the Arctic is below the speed the BIOS expects (1500 rpm I believe) due to it's thermal control.

If your power supply has a variable speed control you could try turning that up to move more air.

You didn't mention what thermal paste you used, I've got Arctic Silver 5 which I'd recommend.

It is possible your processor is bad. Maximum die temperature is
85C, and you need a way to measure that.

http://mbm.livewiredev.com/comp/asus.html
http://www.nforcershq.com/forum/viewtopic.php?t=16364

A graphing plugin for MBM is mentioned here:
http://www.livewiredev.com/bbs/showthread.php?s=&postid=18215

HTH,
Paul

http://www.arctic-cooling.com/en/products/copper_silent2tc/

--
Cheers,

Mark.

===============================================
"For every problem, there is one solution which is
simple, neat and wrong." -- H. L. Mencken
http://www.brainyquote.com/quotes/quotes/h/q109323.html

 

[Ellerich]

I would second that. I replaced one old case that was at 38C with a cheap

Chenbro gaming bomb/spider as it could take a 120mm rear fan and front 92mm
which will move far more air than a 80mm and more quietly. Quiet temp.
controlled fans from www.quietpc.com give me a quiet case with case temps
down to 30C. A more expensive option would be an Antec Sonata which also
takes big fans but I've not tried one myself.

The Thermaltake cases with large numbers of fans (my V2000A has six) also

provide good cooling at a reasonable volume and fan controller as standard,
although their so-called screwless design is oversold and the original PCI
card clips don't work.
I´ll have a look for a new case with 2 or more good and
silent fans in the next weeks. I´ve changed the board , the CPU, the RAM and
the fan with new hardware and it work now. CPU temp is at 100% CPU usage at
60°C with closed case (MB at 32°C) .....The systems runs stable for 24h in
the Torture PRime95 test and the "normal" usage temp of the CPU is 50°C
(measurd by Asus PC Probe). I think with 1or2 additional fans in the case
(there is no one at the moment) everything is ok.

Thank all for help,

Take care, Sven.

If the arctic is at 3000 rpm it's running flat out, you need more cooling.

I'm using BIOS 1008 with Qfan disabled.

As I noted before, the CPU fan failed message on post is because the

Arctic is below the speed the BIOS expects (1500 rpm I believe) due to it's
thermal control.