High CPU Temps

  • Thread starter Thread starter Davej
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Davej

I have an E6400 (2.13 duo) cpu in a system that was put together a few
years ago. It has a stock cpu fan/cooler. In a warm room I'm seeing
high cpu temps approaching 70C but when I put my finger on the outer
fins of the stock cooler I don't feel much heat. Is this normal? The
stock cooler was installed according to the instructions and seems to
still be fitting snugly. If I remember right silicone grease is no
longer used on heatsinks. Thanks.
 
I dropped my temps 15 degrees doing just this...
Click to expand...

Well, I don't see a whole lot of dust. Anyone have any guess regarding
what room temperature should be expected to produce high cpu temps
with the stock cooler?
 
I had a similar problem recently. The CPU overheated and I discovered
that the fins of the heat sink was full of dust just under the fan.
When I cleaned the dust out 15 to 20 drop in temp.

I have dared to check the heat sink yearly to clean the dust
Click to expand...


Well, I will try that. Maybe there is more dust in there than I can
see. Still I am curious about the typical cpu temps for a 2.13 Duo
with the stock cooler.
 
Davej said:
Well, I will try that. Maybe there is more dust in there than I can
see. Still I am curious about the typical cpu temps for a 2.13 Duo
with the stock cooler.
Click to expand...

You ought to be looking at mid 30s Celsius on idle, rising to around 50C
on full load.

Rarius
 
You ought to be looking at mid 30s Celsius on idle, rising to around 50C
on full load.
Click to expand...

Oh well then, I must have had something wrong since I first assembled
this system. I never see 30's. Always high 40's or 50's. I have some
Arctic SIlver 5 paste on order and will also blast everything with
compressed air. Thanks.
 
If you use artic silver yourself, remember that only a drop the size of a BB
is needed. Many people think it doesn't look like enough and they squirt
artic silver on like toothpaste on a toothbrush. In the case of artic
silver, more is not better. What it does is, two surfaces are not perfectly
flat, ie the bottom of the heat sink and the top of the processor, artic
silver fills all the microscopic pits so the transfer of heat between the
surfaces is more efficient.

If you get any artic silver down the side of the processor, etc. then go
have dinner and rent a movie, your done for the day until your new computer
arrives.

--g
 
If you use artic silver yourself, remember that only a drop the size of a BB
is needed. Many people think it doesn't look like enough and they squirt
artic silver on like toothpaste on a toothbrush.
Click to expand...


Well, I probably put a bit too much on but hopefully not so much that
it will ooze anywhere. Beforehand I blew out the dust and then wiped
down the cpu and headsink with isopropyl.

Afterwards I see no improvement. In a hot room (85F) I still see
50-52C idling at the WinXP desktop. I think the cpu frequency and core
voltage are just set to the nominal spec.
 
Well, I probably put a bit too much on but hopefully not so much that
it will ooze anywhere. Beforehand I blew out the dust and then wiped
down the cpu and headsink with isopropyl.

Afterwards I see no improvement. In a hot room (85F) I still see
50-52C idling at the WinXP desktop. I think the cpu frequency and core
voltage are just set to the nominal spec.
Click to expand...

That's about what I get on an old 756 Athlon running around 2GHz at a
little over 85F ambient. A/C drops it, but wouldn't mind an open case
and no heat sinks -- something green along an Intel Atom and fanless
PS. In theory, anyway. 756 is amazingly ancient these days -- all
I'm missing is the 8 or 16 additional cores, I guess.
 
Fri, 7 Aug 2009 09:45:50 -0700 (PDT): written by Davej
Oh well then, I must have had something wrong since I first assembled
this system. I never see 30's. Always high 40's or 50's. I have some
Arctic SIlver 5 paste on order and will also blast everything with
compressed air. Thanks.
Click to expand...

I run in the mid-40's on both cores (42 & 45 as I type via PC Wizard),
but I also use a Nexus silent CPU cooler, so I would expect it to run a
little hotter and hence why I did not initially respond to your temp
question.

I will see the mid-to-upper 30's in the early morning hours when the
house is cooler since I leave a window open overnight to let out the
heat.

There can be quite a build-up of dust inside the heat-sink fins, so the
compressed air will help there.

I use Arctic Silver as well, and as the other poster mentioned, you just
need a drop the size of a BB. Arctic Silver has application
instructions on their website:
http://www.arcticsilver.com/instructions.htm

I found them helpful since the first time I applied it, I used a razor
to apply a "thin" layer across the top of the entire heatspreader and my
temps were in the mid 50's at the lowest. :-(


--


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What app are you monitoring cpu temps with? With my abit software
temps run 21-25 C typically. With CoreTemp (free download) they run
33-34C. I use an aftermarket fan, big one, can't recall name offhand.
Case is big roomy 3DAurora GigaByte. But I seem to recall the temps
with a standard Intel fan where about it the same ballpark.
Click to expand...

I don't really remember where these tools came from. I guess I have
Asus PC Probe II and an ATI tool that must have come with the video
card? These seem to agree that the cpu is hot. Since I can't think of
anything else I'm wondering if the cpu itself might be defective --
either electrically or mechanically? Maybe the heat spreader can
become unbonded from the chip? Thanks.
 
Davej said:
I don't really remember where these tools came from. I guess I
have
Asus PC Probe II and an ATI tool that must have come with the
video
card? These seem to agree that the cpu is hot. Since I can't think
of
anything else I'm wondering if the cpu itself might be
defective --
either electrically or mechanically? Maybe the heat spreader can
become unbonded from the chip? Thanks.
Click to expand...

I recently built an Core I7 machine and had similar high CPU
temperatures (when the processor was stressed it got up to 70c in a
77F(25c) room). I lowered the temps to acceptable levels by
improving air flow in the case. My case had a 120mm fan in an
angled duct in the back and an 80mm fan on the side. Both
exhausting out of the case. The things I did that worked were:

1. Installed fans that moved more air (and incidentally were
actually quieter).
2. Got rid of the duct and mounted the fan on the back.
3. Cut away the case grill on the rear fan. The aluminum case had
holes punched in it for the fan to blow air through.
4. Moved the side fan to the front of the case and turned it around
to blow air into the case.

Each of these modifications lowered the temps but #3 was the biggest
improvement. It also dramatically lowered fan noise.

I kept notes of the temperatures with each thing I tried. I always
used the same program to read temps (SpeedFan) and ran the tests
with the same room temperature.

Typical temperatures now:
Idle 35c
Stressed 60c
I used Prime95 to stress the processor.

Charlie
 
Well, I probably put a bit too much on but hopefully not so much that
it will ooze anywhere. Beforehand I blew out the dust and then wiped
down the cpu and headsink with isopropyl.

Afterwards I see no improvement. In a hot room (85F) I still see
50-52C idling at the WinXP desktop. I think the cpu frequency and core
voltage are just set to the nominal spec.
Click to expand...

70 is high but its not the end of the world. Years back I had machines
that ran at least that hot, they still worked.


NT
 
70 is high but its not the end of the world. Years back I had machines
that ran at least that hot, they still worked.

NT
Click to expand...

Sometimes fitting a larger cpu fan can help.
What temp does it read as soon as its booted up from cold? Boot it as
quickly as poss to do this, and you should spot if the initial temp
reading looks unrealistic.


NT
 
What means the abbrevation BB used here?
As a computerwargamer I first thought the english abbrevation for
Battleship. Or Billboard? Both seem a bit large from the other parts of
the sentence...?
 
What means the abbrevation BB used here?
As a computerwargamer I first thought the english abbrevation for
Battleship. Or Billboard? Both seem a bit large from the other parts of
the sentence...?
Click to expand...

This is a 0.177 caliber round shot used by common air guns. It is
probably slightly larger than a grain of rice.
 
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