CPU Temperature: what is acceptable?

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Profile Borgholio
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Message 79549 - Posted: 15 Feb 2005, 6:27:31 UTC - in response to Message 79485.  

>
> > I think thermal paste is overrated. I never use the stuff.
>
> Try it, your CPU temp should drop by as much as 5°c. Of course if you put
> too much on then the temp may increase by a couple of degrees.
>

I've always had hassles with thermal paste, especially when I need to remove a heatsink several times for troubleshooting or maintenance. As my processor is already running at an perfectly acceptable temperature, I don't see the need for it. :) By using a good heatsink and quality fan, I've never had a heatsink get even remotely warm.
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ric
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Message 79571 - Posted: 15 Feb 2005, 8:18:36 UTC - in response to Message 79549.  
Last modified: 15 Feb 2005, 8:19:19 UTC



Copper based CPU cooler!
prescott 2.8 GHz, Asus MB p4p800se.
The client is working now over several month without any hardware or OS problems.

Asus probe and other tools showing the same temperature range.

It looks like, there is a problem with the cpu-sensor.
The mainbord-sensor shows 30 degrees C.


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Message 79573 - Posted: 15 Feb 2005, 9:03:26 UTC - in response to Message 79571.  

> [url=http://www.imageshack.us]
>
> Copper based CPU cooler!
> prescott 2.8 GHz, Asus MB p4p800se.
> The client is working now over several month without any hardware or OS
> problems.
>
> Asus probe and other tools showing the same temperature range.
>
> It looks like, there is a problem with the cpu-sensor.
> The mainbord-sensor shows 30 degrees C.
>
>
>
>

Yeah I'll say there's a problem with the CPU sensor...90c would fry your chip in a few seconds!
You will be assimilated...bunghole!

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Message 79576 - Posted: 15 Feb 2005, 9:59:52 UTC - in response to Message 79571.  


> It looks like, there is a problem with the cpu-sensor.
> The mainbord-sensor shows 30 degrees C.

A BIOS update can often result in different temperature readings.
Grant
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Message 79577 - Posted: 15 Feb 2005, 10:01:46 UTC - in response to Message 79549.  


> By using a good heatsink and quality fan, I've never had a heatsink get even remotely warm.

But you want the heatsink to be warm- that means it's removing the heat from the CPU. Although if you've got really low ambient temperatures (less than 20°c or so) i guess things would always be pretty cool.
Grant
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Vid Vidmar*
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Message 79582 - Posted: 15 Feb 2005, 10:50:19 UTC

My P4 1.8GHz:
CPU: 37C
Sys: 32C

With only 1 additional fan.
No matter which project I run.

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Profile Jaaku
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Message 79608 - Posted: 15 Feb 2005, 14:25:06 UTC - in response to Message 79210.  

> > You wana look at my temps! i have 10 fans in my pc :D
> >
> > 2.8 p4
> > CPU load = 35C
> > CPU no load = 29C
> >
>
> IT MUST BE THE NOISYEST PC IN THE WORLD!! lol
>

It is quite noicy :D! I dusted it out a few days ago now i get 35C as highest temp :D

http://img226.exs.cx/img226/9184/cpu4pq.jpg
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Message 79643 - Posted: 15 Feb 2005, 17:20:57 UTC - in response to Message 79577.  

>
> > By using a good heatsink and quality fan, I've never had a heatsink get
> even remotely warm.
>
> But you want the heatsink to be warm- that means it's removing the heat from
> the CPU. Although if you've got really low ambient temperatures (less than
> 20°c or so) i guess things would always be pretty cool.
>

Yeah, what I mean is that with a good fan blowing lots of air down on the heatsink, the heat is removed before it has a chance to warm up the heatsink.
You will be assimilated...bunghole!

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Message 79680 - Posted: 15 Feb 2005, 21:19:23 UTC
Last modified: 15 Feb 2005, 21:21:12 UTC

With HT enabled and BOINC running I get 45° for the cpu and 28°C for the system with a 3.2 Prescott. With HT off the temps drop a bit.



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karthwyne
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Message 79714 - Posted: 15 Feb 2005, 23:03:55 UTC

with LGA775 P4 530 (3.0 Ghz) running at 3.0 gets temps under load with SETI about 66°, Einstein and CPDN take it as high as 72°.
running at 3.29 gets the same temps.

i think that the Asus p5p800 sensors are not reading correctly. i did a lot of searching and found that the 775s are just very hot, and no heatsink seems to work overall, though some ppl have cooler running chips. the agreed upon best heatsink zalman CNPS7700-Cu some ppl still had temps over 79º. The only way that worked for everyone was watercooling..
i may be looking at that route myself.

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Message 79729 - Posted: 15 Feb 2005, 23:44:52 UTC - in response to Message 79549.  


> I've always had hassles with thermal paste, especially when I need to remove a
> heatsink several times for troubleshooting or maintenance. As my processor is
> already running at an perfectly acceptable temperature, I don't see the need
> for it. :) By using a good heatsink and quality fan, I've never had a
> heatsink get even remotely warm.

If the heat never gets from the CPU to the heatsink, then the heatsink would run cool....
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Message 79733 - Posted: 16 Feb 2005, 0:02:32 UTC - in response to Message 79576.  

>
> A BIOS update can often result in different temperature readings.
>


In what way? The chip runs cooler? or the temps are reported more correctly?
Not sure how you mean?

Looked for a bios update and I'm running the latest. Flashing is always fun.




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Message 79738 - Posted: 16 Feb 2005, 0:18:02 UTC - in response to Message 79729.  

>
> > I've always had hassles with thermal paste, especially when I need to
> remove a
> > heatsink several times for troubleshooting or maintenance. As my
> processor is
> > already running at an perfectly acceptable temperature, I don't see the
> need
> > for it. :) By using a good heatsink and quality fan, I've never had a
> > heatsink get even remotely warm.
>
> If the heat never gets from the CPU to the heatsink, then the heatsink would
> run cool....
>

True, but my point is that the fan cools it so efficiently that it never has a chance to get hot. Trust me, I DO monitor the CPU temps from time to time, just to make sure everything's ok. :)
You will be assimilated...bunghole!

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Profile Jaaku
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Message 79755 - Posted: 16 Feb 2005, 1:45:26 UTC - in response to Message 79738.  

> True, but my point is that the fan cools it so efficiently that it never has a
> chance to get hot. Trust me, I DO monitor the CPU temps from time to time,
> just to make sure everything's ok. :)
>

All termal paste does it make a better connection between the cpu and the heatsink so there is more contact area so more heat can be moved, i have artic silver 5 ( i think) and it runs no higher than 40C under load and 35C when dusted, lower temps stop cpus from cracking under the stresses of heat and cooling down ( pc on and off) the smaller the leap the longer it will last!
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Message 79837 - Posted: 16 Feb 2005, 4:11:22 UTC - in response to Message 79733.  

> >
> > A BIOS update can often result in different temperature readings.
> >
>
>
> In what way? The chip runs cooler? or the temps are reported more correctly?
> Not sure how you mean?

The temperatures are reported more accurately.
I've had a couple of motherboards where i had to flash the BIOS to sort out an issue i was having, and after doing so the CPU temperatures were (in one case) almost 15 degrees lower. In the other they went up by about a degree.
Interestingly there was no mention on the BIOS page that the temperature reporting was one of the changes made in that version.
Grant
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Message boards : Number crunching : CPU Temperature: what is acceptable?


 
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