CPU temp increase

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anon5391

Asus P4S533, P4 1.6A

My CPU temp at idle has jumped suddenly from 43C to 50C. I don't see any
significant dust accumulation on my HSF. I've not disturbed anything on my
MB or added any new hardware/software.

1) Is it possible the CPU temp probe has become defective?
2) I'm using stock intel HSF with the black coloured heat transfer pad. If I
pull off the HSF can I just stick it back on again or do I have to clean it
off & use thermal grease? TIA
 
anon5391 said:
Asus P4S533, P4 1.6A

My CPU temp at idle has jumped suddenly from 43C to 50C. I don't see any
significant dust accumulation on my HSF. I've not disturbed anything on my
MB or added any new hardware/software.
Click to expand...

Maybe it's related to the recent heatwave we have here?
 
Tony Sutton said:
Maybe it's related to the recent heatwave we have here?
Click to expand...
What was the difference between environment temperature and CPU temperature,
because if the former goes up , so will the latter.

the-gnome
 
anon5391 said:
Asus P4S533, P4 1.6A

My CPU temp at idle has jumped suddenly from 43C to 50C. I don't see any
significant dust accumulation on my HSF. I've not disturbed anything on my
MB or added any new hardware/software.

1) Is it possible the CPU temp probe has become defective?
2) I'm using stock intel HSF with the black coloured heat transfer pad. If
I
pull off the HSF can I just stick it back on again or do I have to clean
it
off & use thermal grease? TIA
Click to expand...

There is a thermal pad on the stock heat sink. If you remove the sink, you
will have to remove the pad and clean it as well as the CPU. Then, use
thermal paste. It may still not be as good as it was. This will be the
case if there is a large gap between the CPU and the sink due to non-flat
surfaces. In such cases, the thermal pad can fill the large gap better.

I don't want to scare you off. But, you should know that replacing a
thermal pad with thermal paste does not always improve heat transfer!
 
Have you tried running with out the case cover on. If it runs cooler
increase your air flow. I bought a P4 power supply with 2 fans and put in a
front case fan and I had a great drop in temp. On hot days I will take the
side of the case off when I am playing a lot of games on line.

Home
 
Maybe it's related to the recent heatwave we have here?
Click to expand...

That really is a good point and one that is often overlooked.

We are here in the northeast and since the last hot spell we have had
here the same thing has happened.

It happens every year to all the boxes (about 25) in the production
department. Both CPU and inside case temperatures will rise 10-15
degrees from what is the norm.

Makes sense in actuality as the room temperature will go to about 95
degrees (F) in the production room. Kind of hard to do any better when
trying to cool with that temperature. :-)
 
Thanks for the suggestion guys, I've found the problem. The culprit was a
program called SpywareGuard. It kept the CPU at 100% utilisation! I'd
recently downloaded & installed it then forgotten about it.

Thought I'd just share the experience. Thanks again
 
anon5391 said:
Asus P4S533, P4 1.6A

My CPU temp at idle has jumped suddenly from 43C to 50C. I don't see any
significant dust accumulation on my HSF. I've not disturbed anything on my
MB or added any new hardware/software.

1) Is it possible the CPU temp probe has become defective?
2) I'm using stock intel HSF with the black coloured heat transfer pad. If I
pull off the HSF can I just stick it back on again or do I have to clean it
off & use thermal grease? TIA
Click to expand...

For a reference, I have the P4S533 with 1.8A running at 2.79. I just
finished a one hour test with 3dmark2001 looping. The room temperature was
25C and the cpu maximum temperature was 49C. The cpu temperature is 34C as
I write this.

You did not mention how the fan is powered. I recommend that you do not use
Q-fan for the cpu with this board as it cannot source enough current to run
the fan full=speed. You can run the Intel fan from the harness and it will
control it's speed as needed.

Your idle temperature indicates that you may have either insufficient
cooling or that a program is running unknownst to you. Use task manager to
see if something is hogging the cpu. You may have a software problem.

I replaced the original Intel cooler with another Intel cooler sold as
"refurbished" by Newegg. The cooler is an improved design and only cost $5
with free shipping. This type cooler has the thermal compound pre-applied
and the cooler is not designed to be resused if it's removed. Of course
there is nothing to stop you from reusing it with another thermal compound
but I doubt if you could obtain the uniformity of the original compound
application. The result could be better or worse.
 
Hurry and get ad-aware or some reputable any spy ware software, update it
and give it a good whirl.
Spyware Guard may not be what it claims to be.
- Tim
 
anon5391 said:
Thanks for the suggestion guys, I've found the problem. The culprit
was a program called SpywareGuard. It kept the CPU at 100%
utilisation! I'd recently downloaded & installed it then forgotten
about it.
Click to expand...

So much for my suggestion. Sorry.
 
I would look for a software problem rather than a hardware one.

The increase of 7 degrees sounds more like your CPU is not idling as much,
and instead is running under more of a load. While you might not have
intentionally added new software, you might have gotten one of the fancier
viruses running around the 'net. I have both anti-virus software and a
strong firewall, and I still managed to get the CoolWebSearch virus. So,
it can happen no matter who good you think your defenses are.
 
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